Oppenheim, a talented documentarian (Some Kind of Heaven, Ren Faire), basing the film on Luke Dittrich’s seminal Esquire article, “Tonight on Dateline This Man Will Die,” takes a kind of interpretive tack with Hansen. As portrayed by the ever-twisty Pattinson, the line between his performative self (thrusting out from behind a literal curtain with the professionally grave, self-important sweep of a high-school principal, or maybe a mortician) and his actual self with his wife and kids, gets smudged into a dark smear, leading him deeper into psychosis. At one point, when one of Hansen’s perp-jump scares goes wrong, he lies down in a fetal position and sinks into a fugue state, unable to be reached by the increasingly agitated Andie.