THE SEARCH FOR A YOUNG MISSING MILITARY WIFE TAKES NCIS AGENTS INTO THE DARK WORLD OF MASTER AND SLAVE ROLE-PLAYING IN "48 HOURS: NCIS: A DATE WITH EVIL"

Tuesday, June 5, 10:00 PM, ET/PT

When a young military wife goes missing, the investigation into what happened takes NCIS agents into the dark world of master and slave role-playing, in 48 HOURS: NCIS: "A Date with Evil" to be broadcast Tuesday, June 5 (10:00 PM, ET/PT) on the CBS Television Network.

"This is a once-in-a-lifetime case," says NCIS Special Agent Jeff Kierman. "Some of the darkness and some of the twisted motivations behind this case - it was overwhelming."

48 HOURS: NCIS is a six-part series from the award-winning team behind 48 HOURS that takes viewers inside the difficult cases faced by NCIS agents, who investigate murders, track killers and use the latest technology to solve cases that once seemed unsolvable. Rocky Carroll, star of CBS' drama series NCIS, narrates each edition.

At the time of her disappearance in April 2012, Brittany Killgore was 22 and living alone in San Diego County, Calif. Her husband, stationed at Camp Pendleton, was deployed to Afghanistan. Her family and friends say their relationship had issues and she had filed for divorce.

One the eve of moving back home, Killgore reluctantly agreed to go out on a dinner cruise with Louis Perez, a staff sergeant in the Marine Corps. He promised her that if she did go out with him, he'd have some of his Marine pals there the next day to move her out, according to her best friend. Perez also had a girlfriend, which complicated the situation. Before agreeing to go, Killgore wanted to get approval from Perez's girlfriend, which she got.

Killgore was last seen getting into Perez's vehicle. Within 10 minutes of closing the door, she texted a friend the word "Help." She never made it home.

"Louis Perez had a dual life," says Brian Patterson, the lead detective on the case for the San Diego County Sheriff's Department.

"Brittany was never going to get on that cruise," says Patterson.

NCIS agents and San Diego County sheriffs formed a joint task force to find Brittany. The investigation was soon focused on the bizarre role-playing relationship between Perez and his girlfriend, Dorothy Maraglino, and another woman, Jessica Lopez, who was Maraglino's slave. They found damning evidence in a dungeon in Maraglino's home, in Perez's car and in a hotel room where Lopez apparently tried to commit suicide. There was also a detailed seven-page letter with key information about Killgore's disappearance.

"I will never understand why she didn't listen to her gut. Evil doesn't look like evil," says Michelle Wrest, Brittany's mother.

"She was just a kid...she wasn't a wild kid, she wasn't a party kid, she was a kid," her father, Darryl Wrest, said."

48 HOURS: NCIS: "A Date with Evil" is produced by Kim Kennedy. Jonathan Leach is the coordinating producer. Asena Basak is the development producer. Laura Ramirez and Cindy Cesare are the field producers. Kayla Keddal is the associate producer. Marlon Disla and Phil Tangel are the producer-editors. Michael Vele, George Baluzy and Jack Pyle are the editors. Rob Klug is the director. Anthony Batson is the executive producer. Susan Zirinsky is the senior executive producer.

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