“The Titan” (**1/2 out of four) was a diverting but derivative sci/fi melodrama about a military family (Sam Worthington and Taylor Schilling) who take part in a groundbreaking evolutionary experiment ran by a sinister army scientist (Tom Wilkinson) which naturally doesn’t go as planned. Too many ideas borrowed from other movies (“The Fly” especially) and takes too long to get going but film is creepy and stylish in parts and its unexpectedly touching final third makes this worthwhile. Worthington is first-rate as usual and has strong support from both Schilling and Wilkinson.