“The Missing Sister” (** out of four) was an utterly predictable thriller in which a successful businesswoman (Katrina Begin) tracks down her estranged sister (Katie Michels) and is elated to be back together and a family again but she soon begins to suspect that she isn’t her sister at all and is a vindictive opportunist who wants to take over her life. Typical suspense-and-revenge thriller has attractive lighting and camerawork but is usurped by its by-the-numbers story and plotting. Begin and Michels try their best but this is “missing” the essential spark and surprises that a thriller needs.