This type of film has not been attempted since it's most directly inspired The Sixth Sense in 1999. The Bruce Willis movie used a much more straightforward approach and subsequently scored much higher gains at the box office.
If you've skipped all of the X Men films after the 2nd, this might be a good place to pick up again. Heck if you skipped all of the films, but want to see an incredibly well played drama, partake in this feature. Much care went into this film, and it feels like everything is balanced on the edge of a knife. And then the knife slips and goes right through.