11/12/2012 08:03 pm ET

'Game Of Thrones' Season 3: HBO Drama Finds Its Roslin Frey And More Casting News (REPORT)

"Game of Thrones" has reportedly cast a small but pivotal Season 3 role -- Roslin Frey -- according to fansite Winter Is Coming. British actress Alexandra Dowling is rumored to have scored the role, after WIC discovered the credit on Dowling's resume. A request for confirmation from HBO was not immediately returned.

While fans of the books already know why Roslin's casting is so important to the story, we'll try to keep it spoiler-free for those who haven't read the novels. Suffice it to say, Robb Stark (Richard Madden) was betrothed to an unspecified daughter of House Frey in Season 2 of the HBO drama, but broke that agreement to wed the healer Talisa (Oona Chaplin) at the end of last year, much to his mother's chagrin. The sprawling Frey family, headed by Lord Walder Frey (David Bradley) should play an integral role in Season 3, if the series adheres to the storyline of George R. R. Martin's third book, "A Storm of Swords."

Winter Is Coming also reports that Lord Frey's great-grandson, Black Walder, will be played by Tim Plester, but that is also yet to be confirmed.

In other casting news ...

New Kid hits "90210's" block. Joey McIntyre will guest star on the CW soap as an up-and-coming music manager who has some business with Dixon. [EW]

Matthew Lillard joins FX pilot. The "Descendants" and "Scooby Doo" star will play Daniel Frye, a cocky (and hard-partying) reporter with the El Paso Times. If the pilot is picked up to series, Lillard will reportedly recur heavily. [The Hollywood Reporter]

"Dark Knight" actor boards "Last Resort." Singapore actor Chin Han has joined the ABC drama as as a Chinese ambassador, Mr. Zheng, who works with Andre Braugher's character to negotiate supplies for the starving submarine crew and islanders. [AsiaOne]

"Game Of Thrones"