The film's central metaphor is so sublimely obvious it feels like it's been stolen from a forgotten Star Trek script.

If you're just after popcorn thrills, then In Time is not a complete waste of time, but future generations will not remember it.

In Time is so crammed with provocative ideas it begins to feel over-crowded.

Timberlake and Amanda Seyfried lurch from car chases to shoot-outs, to a bloodless romantic interlude, while the script runs out of ideas around them, and eventually settles for a lazy Bonnie and Clyde-inspired final act.