“Missing” (** out of four) was a claustrophobic online psychodrama about a woman (Nia Long) who goes suddenly missing and her daughter (Storm Reid) attempts to track her down and find her using various tools online on her computer and from home but finds that the online web can be a very dark and mysterious place at times. Directors Nicholas Johnson and Will Merrick and star Reid do all they can to pump this up with intrigue and tension but the problem with these online/computer thrillers is they get unavoidably monotonous and limited after a while. After a while, what’s “missing” is spontaneity and variety and film gradually runs out of fuel.