GILROY -- While search teams combed the area around Placer County's Thunder Valley Casino Wednesday, the parents of a missing Gilroy woman anxiously awaited any word of her fate.

Christie Wilson, who now lives in Sacramento, was last seen on surveillance cameras at Thunder Valley walking around the casino and leaving with a 53-year-old man.

But she never made it to her car and has not been seen or heard from since those early hours of Oct. 4

"Her car is really highlighted well on the tape," her stepfather Pat Boyd, a San Jose police detective, told KTVU Wednesday. "She never made it to her car."

Authorities said Wilson, 27, was clearly seen several times on the tapes in the casino interacting with the unidentified man, who they are calling a 'person of interest.'

"They went from table to table," Placer County Sheriff's Lt. George Malim said of the tape. "They spent some time together going table to table and we see them walk around…and then walk out of the casino to the parking lot…The fact we see her walk into the parking lot with the man gives us great concern."

Malim said Wilson's silver BMW was about 200 yards from the man's vehicle.

Wilson's mother said police have told them there is evidence pointing to the man.

"They have some circumstantial evidence, but not enough to pinpoint him," she said.

Authorities have asked the Boyds to stay away from the search area for now. They were scheduled to meet with local police for an update on Wednesday.

"I heard on Saturday or Sunday that the police had reason to treat this as a potential homicide," she said. "It's emotional turmoil that you wouldn't even believe. It's horrible."

"It definitely turned it to being out looking for her and is she out doing something stupid to -- when the homicide word came up the first time --my wife totally broke down," Pat Boyd said.

Among the odd developments in the case, Wilson's stepfather said, was the fact that the man was seen on the videotape with out a black eye and now has one.

"There are questions he simply is not answering right now," Boyd said.

Wilson's boyfriend, Daniel Burlando, 30, of Sacramento, found her car at the casino two days later.

Her parents were alerted to her disappearance by a call from a prospective employer.

"She had a job interview in Berkeley and they called (us) because she didn't show up," Debbie Boyd said. "She wouldn't ever do that. That made us think that something was seriously wrong."

Wilson is described as white, 5 feet 4 inches and 150 pounds. She has brown hair and eyes. Anyone with information is urged to contact Placer sheriff's Sgt. Bob McDonald at (530) 889-7852 or the Sacramento Police Department's missing persons unit at (916) 433-0650.