believing the other person is the killer. Gabe manages to overpower Sara but is then attacked by Lucas. Sara eventually recovers and hits Gabe over the head with a fire extinguisher. Lucas reveals that he had been wearing a bulletproof vest, allowing him to survive getting shot. With Gabe subdued, Lucas expresses doubt that there's enough evidence to prove that Gabe was the killer. Sara, however, reveals she found a way to get one step ahead of the killer. Knowing that the killer was relying on timed mechanisms and remotes, as well as enjoying watching their anxiety under pressure, she changed one of the clocks to appear slow by fifteen minutes, and covered it in a powder that glows phosphorescently under blacklight; reasoning that the killer wouldn't be able to resist setting the clock to the correct time, she grabs a black light to scan Gabe's hands and reveal him as the killer only to find the marking powder on Lucas' hands instead. Lucas confesses that his parents did not die in an accident, but that he killed them. Struggling to find more thrilling targets, he joined the FBI and planned to kill his brilliant fellow profilers, the only people he thought would be "worthy prey". Lucas tries to drown Sara, but she manages to kick him into the water. The two struggle again and recover their weapons underwater, though Sara manages to shoot Lucas dead before he can kill her. Gabe recovers from his earlier wound, and when morning arrives, Gabe and Sara flag down a U.S. Navy helicopter to leave the island. Cast Kathryn Morris as Sara Moore LL Cool J as Gabe Jensen Jonny Lee Miller as Lucas Harper Patricia Velásquez as Nicole Willis Clifton Collins Jr. as Vince Sherman Eion Bailey as Bobby Whitman Will Kemp as Rafe Perry Val Kilmer as FBI Agent Jake Harris Christian Slater as J.D. Reston Trevor White as Attacker Cassandra Bell as Jen Jasmine Sendar as Jen's Friend Anthonie Kamerling as Man In bar Daniël Boissevain as Man In bar #2 Production Wayne Kramer sold the original spec screenplay of Mindhunters to 20th Century Fox. The title of his screenplay was originally called Unsub (Unknown Subject), but Fox executives preferred the title Mindhunters and changed it before the deal was announced to the entertainment press. Kramer never felt comfortable with the title change because there was already a non-fiction book