Review: Knight and Day (12A)**

James Mangold's fast-paced action comedy has lots of crash, bang but almost no emotional wallop. Screen chemistry between the leads never catches fire, even when entire buildings are exploding around them.

June Havens (Diaz) is an unassuming Midwestern gal, who is in the wrong place at the wrong time. Boarding a flight, June is unexpectedly caught in the crossfire of a mid-air shoot out between paranoid government agent Roy Miller (Cruise) and gun-toting assassins. She is now marked for death and must quickly learn the tricks of the spy trade to stay alive and avoid an early grave.

Knight and Day gallops across the globe from Boston to Salzburg and finally to Seville for a spectacular finale during a bull run.

Cruise limbers up for the physical demands of Mission: Impossible IV, scheduled for release next summer, with a series of bruising stunt sequences and Diaz gets battered too behind the wheel of a car in the centrepiece chase.

However, it's hard to muster concern about Roy and June when the screenplay pays such scant attention to character development.

Myriad villains are cardboard cut-outs.

The twist is heavily signposted and the stars seem to be bulletproof, emerging from the melee virtually unscathed.