“Dangerous” (** out of four) was a mundane action melodrama about a former sociopath (Scott Eastwood) who has reformed and journeys back to a remote island to investigate the death of his brother but finds himself tangled up with various law enforcement (Famke Jannsen and Tyrese Gibson) and underworld figures (Kevin Durand, Ryan Robbins, and others). Half-baked story feels like another retread of the “Bourne” series; good cast makes it watchable but you’ve seen a lot of this before and done better. Mel Gibson is well-cast in a small role as Eastwood’s drunken therapist.