If Three Identical Strangers were a book, it would be the kind of page-turner that you devour in a single weekend. Unlike most paperback potboilers, though, Three Identical Strangers’ bizarre, emotional rollercoaster lingers with you—and not merely because it all actually happened. Tim Wardle’s documentary ends up taking viewers to a very dark place, and, even as it remains a compulsively watchable and digestible experience, it refuses to offer the kind of clear-cut resolution we demand from mysteries. by Ned Lannamann