Director Gilles Paquet-Brenner’s adaptation of “Gone Girl” author Gillian Flynn’s novel “Dark Places” takes its titular theme to the hilt, in a film that is as its title suggests unrelentingly dreary. Not that it has much of a choice given the subject matter. A gothic Americana mystery, “Dark Places” spans two timelines as it unravels the truth behind one horrific crime. In the present, Libby Day (Charlize Theron) is a traumatized adult shuffling aimlessly through life. Nearly 30 years since her mother and sisters were murdered and her brother was convicted as their killer, the leader of a sort of underground crime “fan club" approaches her. At first they make a deal to pick her brain about what happened and then they drop a bombshell. They believe her brother is innocent and they want her help to prove it. From here the movie registers as a whodunit, unwinding all of the lurid details that led up to the awful conclusion with the promise of uncovering the real perpetrator.