“Vanished: Searching For My Sister” (** out of four) was a languid mystery melodrama about a woman (Tatyana Ali) whose twin sister disappears and after being stalled by the police- she takes matters into her own hands and disguises herself as her sister and immerses herself into her sister’s world of drugs and crime to find out what really happened to her. Intriguing storyline of a sister assuming another’s identity is told in pretzel-time logic that recalls Christopher Nolan’s “Memento” but is overall sordid and soggy. Ali once again proves she’s a credible actress but this one will likely “vanish” from Redbox machines within a few weeks.