When the promo for next week's "Grey's Anatomy" aired Thursday night, fans panicked after seeing a pregnant Meredith (Ellen Pompeo) slip and fall on the stairs at the hospital.

Now, showrunner Shonda Rhimes is hinting that "Grey's Anatomy" viewers have reason to worry about Meredith's baby. "She has that fall, and that starts a string of events that is cause for concern," Rhimes told TV Guide. "Then, in the finale, we have the storm hit and the conditions under which Meredith Grey has to go into labor are the exact opposite of any conditions under which anybody ever in the world would want to have to give birth ... It's also a really beautiful story, and I think Ellen did amazing work on it and I'm really excited about it."

Considering how challenging it was for Meredith to get pregnant, it seems only fitting that giving birth would be an equal challenge. But with the official episode description for the "Grey's Anatomy" Season 9 finale (below) teasing that "one of the doctors fights for their life," does this mean Meredith's delivery could be fatal?

"We will leave the season with someone fighting for their life," Rhimes teased to TV Guide. "There's plenty of jeopardy in the finale, there's a lot of pain, but there's also some joy. Unlike some seasons when there was no joy and only pain, there is some joy."

"Some seasons" would certainly apply to the Season 8 finale, which saw the death of Meredith's half-sister Lexie (Chyler Leigh), Mark (Eric Dane) fighting for his life (and eventually dying in Season 9), and Arizona (Jessica Capshaw) losing her leg. "When we leave the season, we're definitely going to be worried about one of our own," Rhimes told The Hollywood Reporter. "I don't think that anything can match the brutality of last year's finale for me. I just watched it again recently and was kind of surprised myself about the brutality of it. I don't think we're going to match that but for a lot of our characters, it's a much more emotional. There's a lot of emotional death."

Emotions are certainly expected to run high when it comes to Arizona and Callie's (Sara Ramirez) storyline. This week's episode introduced new craniofacial specialist Lauren Boswell ("One Tree Hill"/"White Collar" star Hilarie Burton), who wasn't shy about flirting with the married woman. "We’re equal opportunity over here at 'Grey’s Anatomy,'" Rhimes told TVLine of what fans fear could become a "Calzona" cheating scandal. "Straight people have their cheating moments all of the time. We’ve created this relationship that’s very interesting and complex, and I feel like we’re at a moment where this [temptation] feels earned. We’re doing something that feels very in keeping with what’s right for these characters."

Rhimes told THR that her research on post-traumatic stress disorder indicated that what Arizona went through would perhaps lead to this kind of complication. "These people have been through a hell of a lot this season and we've watched them struggle to right themselves fairly quickly -- perhaps too quickly," Rhimes said. "There's stuff there that has not been dealt with. We're taking them through it, which I think is great, and Lauren is definitely possibly a part of that."

How far will things go with Lauren? "It's going to go very, very far," the showrunner explained.

Rhimes also told THR and TVLine that the final Calzona scene in the Season 9 finale had the biggest effect on the cast. "The goal of the [Calzona] story becomes really clear in the last moments of the finale: you really begin to understand in their last scene," she told THR. "From our table read, that was the most stunning moment of the table read -- the entire cast gasped and fell silent."

Read the official episode descriptions for the final two episodes of "Grey's Anatomy" below and tune in Thursdays at 9 p.m. ET on ABC to find out what happens with Meredith's baby, Callie and Arizona and the rest of the Grey Sloan Memorial staff.

"Readiness Is All" (penultimate episode, airing Thursday, May 9 at 9 p.m. ET)

The doctors of Grey Sloan Memorial Hospital prepare for a super storm heading towards Seattle; Owen's desire to be a parent gets stronger as he becomes closer to Ethan; and one wrong move puts the lives of Meredith and her baby in jeopardy. Meanwhile, Jo looks to Alex for help in a moment of crisis, and one doctor gets the shock of her life.

"Perfect Storm" (season finale, airing Thursday, May 16 at 9 p.m. ET)

Grey Sloan Memorial Hospital enters crisis mode as the storm rages, resources become scarce and patients flood in by the busload. Meanwhile, one of the doctors fights for their life.

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  • "666 Park Avenue"

    <strong>"666 Park Ave.," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: <a href="http://www.huffingtonpost.com/2012/11/16/666-park-avenue-canceled_n_2147290.html">ABC pulled the plug</a> on this supernatural drama earlier in the season.

  • "The Bachelor"

    <strong>"The Bachelor," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: While ratings may have dropped, "The Bachelor" will likely see another season on ABC as tabloids and viewers still care about the comings and goings of contestants.

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    <strong>"Body of Proof," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: ABC is keen on this Dana Delany drama, but the ratings for the show's third season couldn't save it.

  • "Castle"

    <strong>"Castle," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: Strong ratings and a dedicated viewership keep "Castle" on the schedule.

  • "Dancing With the Stars"

    <strong>"Dancing With the Stars," ABC</strong> <strong>Status</strong>: Likely to be renewed <strong>Why</strong>: The series is hurting in the ratings ... by "DWTS" standards. It's still a strong player for ABC, but the new season hasn't premiered yet.

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    <strong>"Don't Trust The B---- In Apt. 23," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: <a href="http://www.huffingtonpost.com/2013/01/22/apartment-23-canceled-dont-trust-the-b_n_2528858.html">ABC pulled the low-rated comedy</a> from it schedule and the stars took to Twitter to announce the cancellation.

  • "Family Tools"

    <strong>"Family Tools," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: This ABC comedy had a May 1 premiere date and that was the first of many bad signs.

  • "Grey's Anatomy"

    <strong>"Grey's Anatomy," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: America still loves McDreamy and the goings on at <s>Seattle Grace</s> Grey Sloan Memorial.

  • "Happy Endings"

    <strong>"Happy Endings," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: Always the bubble show, never the surefire renewal hit. "Happy Endings" has suffered from many ratings ailments, including bad scheduling (<a href="http://www.huffingtonpost.com/2013/02/14/happy-endings-friday-abc_n_2683091.html">it moved to Friday night</a>) and lack of promo. But this ahmahzing show has some serious fans that are determined to keep it around on another network (a la "Cougar Town.")

  • "How To Live With Your Parents (For The Rest Of Your Life)"

    <strong>"How To Live With Your Parents (For The Rest Of Your Life)," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: The ABC comedy starring Sarah Chalke had a late midseason debut and though its ratings were decent, it still couldn't save the comedy.

  • "Last Man Standing"

    <strong>"Last Man Standing," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: Viewers still love Tim Allen and the show has been performing well on Friday nights.

  • "Last Resort"

    <strong>"Last Resort," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: <a href="http://www.huffingtonpost.com/2012/11/16/last-resort-canceled-abc_n_2147316.html">ABC killed the Shawn Ryan drama</a> in late 2012.

  • "Malibu Country"

    <strong>"Malibu Country," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: "Malibu Country" had been performing well on Friday nights, but the ratings took a dip and there was also showrunner switches that are never a good.

  • "The Middle"

    <strong>"The Middle," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: Now in its fourth season, "The Middle" is still pulling in more than 8 million viewers an episode as the anchor of ABC's Wednesday comedies.

  • "Mistresses"

    <strong>"Mistresses," ABC</strong> <strong>Status</strong>: Too soon to tell <strong>Why</strong>: The drama, which is based on the UK series of the same name, just got a Monday, May 27 premiere date. Though the scheduling struggle doesn't bode well, the ABC drama does have Alyssa Milano and "Lost" alum Yunjin Kim leading the foursome.

  • "Modern Family"

    <strong>"Modern Family," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: A fan favorite and Emmy darling, "Modern Family" will be back and will make ABC lots of money in syndication.

  • "Nashville"

    <strong>"Nashville," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: Critical acclaim doesn't always equate to rating success, but ABC still believes in this Connie Britton-fronted drama despite the numbers.

  • "The Neighbors"

    <strong>"The Neighbors," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: One of the few "hits" of the season, "The Neighbors" has found an audience and kept it pretty steadily week after week (<a href="http://www.huffingtonpost.com/2012/06/11/abc-shows-fall-tv-2012-2013_n_1581796.html">much to our dismay</a>).

  • "Once Upon a Time"

    <strong>"Once Upon a Time," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: A ratings hit in its second season, "Once Upon a Time" will be back for a third season full of fairytale adventures.

  • "Private Practice"

    <strong>"Private Practice," ABC</strong> <strong>Status</strong>: Ended <strong>Why</strong>: The "Grey's Anatomy" spinoff said goodbye in January 2013.

  • "Red Widow"

    <strong>"Red Widow," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: The show had a late February debut on ABC and the ratings were abysmal.

  • "Revenge"

    <strong>"Revenge," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: "Revenge" has fallen out of critical favor and seen lower ratings in its new Sunday night home. Though it lost its creator Mike Kelley as the showrunner, it will return for a third season, considering the sad state of ABC's dramas.

  • "Rookie Blue"

    <strong>"Rookie Blue," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: The Canadian co-production will return for a fourth season on ABC during the summer of 2013.

  • "Scandal"

    <strong>"Scandal," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: Shonda Rhimes has another hit on her hands. Now in its second season, "Scandal" has benefited from word-of-mouth and has been rising in the ratings (even recently beating out its lead in "Grey's Anatomy"). A likable star -- Kerry Washington -- and continued buzz keep "Scandal" on the schedule.

  • "Suburgatory"

    <strong>"Suburgatory," ABC</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: The series started Season 2 off strong in the ratings, but its audience has slowly eroded. Still, the show will be back for a third season.

  • "Zero Hour"

    <strong>"Zero Hour," ABC</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: The Anthony Edwards vehicle debuted to 6.3 million viewers with a 1.3 rating in the key 18-49 demographic, making it <a href="http://www.huffingtonpost.com/2013/02/15/zero-hour-ratings_n_2695800.html">the least-watched premiere for a scripted series in ABC's history</a>. Things only got worse from there.

  • "2 Broke Girls"

    <strong>"2 Broke Girls," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: CBS renewed "2 Broke Girls" in March of 2013.

  • "The Amazing Race"

    <strong>"The Amazing Race," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: As an Emmy and fan favorite, "The Amazing Race" has been a strong player for CBS.

  • "The Big Bang Theory"

    <strong>"The Big Bang Theory," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: Now in its sixth season, "Big Bang" is reaching series-high ratings. Even up against reality powerhouse "American Idol," "The Big Bang Theory" has been delivering with crazy high numbers in the 18-49 demographic, beating out what was once Fox's juggernaut.

  • "Blue Bloods"

    <strong>"Blue Bloods," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: The Tom Selleck-fronted police drama is a strong ratings performer for CBS on Fridays.

  • "Criminal Minds"

    <strong>"Criminal Minds," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: As one of CBS's strong procedural players, the series has been steady in the ratings and will likely be renewed to help anchor a night and launch a new drama.

  • "CSI"

    <strong>"CSI," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: Of the two "CSI" shows on the air, "CSI" is the stronger player in the TV landscape. The show is nowhere near its earlier ratings, but Ted Danson signed on for more and the show will be back.

  • "CSI: NY"

    <strong>"CSI: NY," CBS</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: The ratings from this "CSI" spinoff have faded over the years.

  • "Elementary"

    <strong>"Elementary," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: One of the very few freshman series hits during the 2012-2013 TV season, CBS is very keen on this modern-day take on Sherlock Holmes. The audience has been steady and the network even gave it the post-Super Bowl timeslot.

  • "Golden Boy"

    <strong>"Golden Boy," CBS</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: CBS certainly has a handsome star at the front of this cop drama, but its late season entry hinted toward CBS's confidence in the show.

  • "The Good Wife"

    <strong>"The Good Wife," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: A former ratings champ, "The Good Wife" has slipped to series low ratings on Sunday nights. Blame football overrun, fan-detested storylines or too many guest stars, but "The Good Wife" has star power and critical praise, plus its nearing a good syndication sweet spot.

  • "Hawaii Five-0"

    <strong>"Hawaii Five-0," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: In March, <a href="http://www.huffingtonpost.com/2013/03/27/the-good-wife-renewed-season-5_n_2965829.html" target="_hplink">CBS announced "Hawaii Five-0" received an early renewal along with several of its other popular programs</a>.

  • "How I Met Your Mother"

    <strong>"How I Met Your Mother," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: CBS handed out a ninth and final season to this comedy with the entire cast returning. Expect to meet the mother, finally.

  • "Made In Jersey"

    <strong>"Made In Jersey," CBS</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: CBS pulled the plug on this legal drama very early on in the season because of low ratings.

  • "The Mentalist"

    <strong>"The Mentalist," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: "The Mentalist" has fallen to mediocre ratings -- by CBS standards -- but it was nonetheless renewed in March of 2013.

  • "Mike & Molly"

    <strong>"Mike & Molly," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: The ratings are down a little bit from last year, but Melissa McCarthy's star continues to rise.

  • "NCIS"

    <strong>"NCIS," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: CBS reached a deal with series star Mark Harmon in early 2013, keeping the No. 1 show in America around for a Season 11.

  • "NCIS: LA"

    <strong>"NCIS: LA," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: Viewers love their "NCIS," in any form. The ratings have been strong and the network is producing a backdoor spinoff pilot for this spinoff show. A full night of "NCIS" could be in CBS's future.

  • "Partners"

    <strong>"Partners," CBS</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: Low ratings and unfavorable reviews led to the <a href="http://www.huffingtonpost.com/2012/11/16/partners-canceled-cbs_n_2145832.html">early demise</a> of this CBS comedy.

  • "Person of Interest"

    <strong>"Person of Interest," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: The series has developed a nice-sized audience, bigger than its first season.

  • "Rules of Engagement"

    <strong>"Rules of Engagement," CBS</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: This comedy has been on the bubble since it premiered ... yet it made it to Season 7. It's finally time to say goodbye.

  • "Survivor"

    <strong>"Survivor," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: A strong player for the last 13 years, "Survivor" will be back. But due to its <a href="http://www.huffingtonpost.com/2013/02/14/survivor-ratings-lowest-premiere-ever_n_2687591.html">most recent premiere ratings</a>, we might not see it during the fall season, though a midseason or summer return -- with some new gimmick -- is definitely in the cards for the reality series.

  • "Two and a Half Men"

    <strong>"Two and a Half Men," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: CBS always wanted another season of this bawdy hit, it was just a matter of getting its stars to sign back on. Though Jon Cryer and Ashton Kutcher will be back for a Season 11, the "half" man Angus T. Jones remains up in the air.

  • "Undercover Boss"

    <strong>"Undercover Boss," CBS</strong> <strong>Status</strong>: Renewed <strong>Why</strong>: The show is enjoying life in syndication and its Season 4 numbers are better than most of its third season.

  • "Unforgettable"

    <strong>"Unforgettable," CBS</strong> <strong>Status</strong>: Uncanceled <strong>Why</strong>: CBS canceled the Poppy Montgomery drama last season ... and then revived it! Season 2 premieres Sunday, July 28.

  • "Vegas"

    <strong>"Vegas," CBS</strong> <strong>Status</strong>: Canceled <strong>Why</strong>: Despite star power, the series wasn't a breakout hit in the ratings. CBS previously canceled "Unforgettable" (then uncanceled it) last season when it was doing about the same as "Vegas."

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