The devastated family of Heather Elvis, a missing South Carolina woman who mysteriously vanished from Myrtle Beach nearly three weeks ago, is appealing to the public for help.
"We are worried sick. We need anyone that knows anything – even the smallest detail – to come forward," Elvis' father, Terry Elvis, told The Huffington Post on Monday. "I'm not ruling out foul play or anything else. I don't care what it is. I can forgive just about anything."
The missing 20-year-old was last seen at about 2 a.m. on Dec. 18, 2013, when she returned home from a date. She called a female friend about an hour later to tell her how the date went and that was the last time anyone spoke with Heather Elvis. She has not made contact with friends or family and has not showed up for her job at the Tilted Kilt Pub and Eatery in Myrtle Beach.
The first and only known break in the case came on Dec. 19, 2013, when Elvis's dark green 2001 Dodge Intrepid was found parked at Peachtree boat landing. The location is about an eight-minute drive from the missing woman's parents' house.
"It's in Socastee, on the outskirts of Myrtle Beach," Terry Elvis said. "It's known to the entire family."
He added, "She liked to go to the water now and then, but not at that hour of the night."
According to Terry Elvis, his daughter's cellphone was not found in her vehicle and is still missing.
Since Heather Elvis disappeared, there have been multiple searches for her. The most recent, organized by the CUE Center for Missing Persons, took place over the weekend. According to The Sun News, nearly 300 people participated.
A spokesman for the Horry County Police Department -- the lead agency investigating Elvis' disappearance -- said they are doing everything they can to locate her.
"Our major crimes detectives are continuing to investigate her disappearance around the clock," Lt. Rob Kegler told HuffPost on Monday. "We are working hand-in-hand with the CUE Center ... [and] we are following up on every lead that comes in."
In regard to the possibility of foul play, Kegler said, "There's no definite sign leading one way or the other at this point."
According to Terry Elvis, his daughter is responsible and does not have a history of running off.
"It's out of character for her to be gone for any length of time like this," he said. "She's never gone 24 hours without calling someone."
Elvis also said the family has yet to celebrate Christmas.
"It's on hold," he said. "The tree is still up and all the presents are there. We are hoping and praying she comes back so we can have Christmas with her."
PHOTOS OF HEATHER ELVIS: (Story Continues Below)
The 5-foot-1 woman weighs about 118 pounds. She has brown/auburn hair and brown eyes. There is a $25,000 reward for information leading to finding her. The family has also set up a Facebook page and a reward donation account with a PayPal account under FindHeatherElvis@gmail.com.
"Her mother, sister, brother and I are frantically grasping at all straws to find out where she is at," Terry Elvis said. "If you know anything at all, please come forward. We just want our daughter back."
Anyone with information about Heather Elvis should call the Horry County Police Department at (843) 915-5350 or (843)-915-TIPS (8477).