When A Stranger Calls has dethroned Martin Lawrence comedy Big Momma's House at the box office over the weekend.

The horror remake, in which a teenage babysitter is harassed by a prank caller, opened with $22m, whilst Momma reeled in $13.4m in its second weekend.

The top ten in full:
1. (-) When a Stranger Calls - $22.0m
2. (1) Big Momma's House 2 - $13.4m
3. (2) Nanny McPhee - $9.9m
4. (6) Brokeback Mountain - $5.7m
5. (5) Hoodwinked - $5.3m
6. (3) Underworld: Evolution - $5.1m
7. (-) Something New - $5.0m
8. (4) Annapolis - $3.5m
9. (12) Walk the Line - $3.4m
10. (7) Glory Road - $3.0m