Insidious sequel scares up box-office

Los Angeles - Moviegoers were in the mood for a fright this weekend, sending Insidious: Chapter 2 to the top of the box office.

The haunted-house horror flick debuted in first place with $41m.

Another newcomer, the Robert De Niro-Michelle Pfeiffer crime caper The Family, opened in second place with $14.5m. That bumped last week's champ, Riddick, to third.

Lee Daniels' The Butler continued its strong performance with a fourth-place finish that saw North American ticket sales cross the $100m mark.

The Jennifer Aniston-Jason Sudeikis road-trip comedy We're the Millers rounded out the top five.