Mindhunters 2004
A Deadly Game of Cat and Mice 
Renny Harlin, the Finnish-born Hollywood filmmaker, directs the suspense thriller Mindhunters with a screenplay by writer/director Wayne Kramer.
Story Val Kilmer stars as Harris, an FBI official teaching a group of trainees the art of profiling serial killers. He takes them on a weekend retreat to a deserted island for some supplemental simulation exercises in which they catch a fake killer. When some FBI trainees get killed for real, the rest deduct the murderer must be one of them. Class leader Sara (Kathryn Morris) must try to stay alive long enough to figure out if one of her colleagues is the murderer.
Cast Val Kilmer, Christian Slater, LL Cool J, Eion Bailey, Will Kemp, Johnny Lee Miller, Clifton Collins Jr. Patricia Valazquea and Kathryn Morris.
Our Two Cents Very suspenseful. You will be trying to figure out who the bad guy or gal is until the very end.
FYI Harlin and Kilmer also worked together in 5 Days of August. Kilmer and Slater have starred together in Hard Cash and True Romance. Kilmer is not in this film very much. Just a little more than a cameo