Identity (2003)

Strangers from all different walks of life: a limo driver escorting a fading television star, parents with a young son whose marriage is in crisis, a cop transporting a dangerous convict, a beautiful call girl, a couple of young newlyweds, and a nervous motel manager are caught up in a severe rainstorm, stuck at a motel in desolate Nevada. Soon they realize they may be at the motel for another reason when one by one, people start getting killed off. As tensions flare and fingers are pointed, they have to get to the bottom of why they're there. Meanwhile in an undisclosed location, a psychiatrist is trying to prove the innocence of a man accused of murder in an eleventh hour trial. How these two through-lines are related can only be found in Identity.