Looking for name of movie

I'm looking for the name of a movie

In the movie some cops are trained specially and as a final test they are sent to an island where they have to solve a case. Although they are the only people on the island, one by one start dying in very special ways. With every murder they find a watch which shows the time when the next murder will happen.

Could be that John Travolta acts in the movie, not sure, though.

Any idea?

EDIT: The movie is called Mindhunters, thanks to def, gaso and moff