Hayley Mills

Josh Hartnett leads this M. Night Shyamalan thriller as an everyday dad who takes his daughter to a massive indoor concert featuring her favourite pop star—only to find out the police are secretly planning to lockdown the event and weed out a notorious serial killer.

Hayley Mills plays twins who, unknown to their divorced parents, meet at a summer camp. Products of single parent households, they switch places (surprise!) so as to meet the parent they never knew, and then contrive to reunite them.