A San Diego County judge is expected to rule on whether three people allegedly involved in a sex bondage ring will stand trial for the killing of a 22-year-old Marine Corps wife.

Prosecutors plan to present their final testimonies in the case of Brittany Killgore at San Diego Superior Court on Monday.

Investigators say Killgore was kidnapped and made an unwilling participant in bondage and torture before she was strangled.

Prosecutors say the Fallbrook woman disappeared April 13 after agreeing to go on a dinner cruise with Marine Sgt. Louis Perez.

Her nude body was found near a lake four days later.

Perez, Jessica Lopez and Dorothy Maraglino have pleaded not guilty to murder.

Perez told investigators he dropped Killgore off at a night club in downtown San Diego.