Marley & Me director David Frankel has signed on to direct the animated fantasy project Septimus Heap: Magyk, with Rob Lieber adapting for Warner Bros.

According to Variety, Karen Rosenfelt is producing through her Sunswept Entertainment banner.

Warner acquired bigscreen rights to Septimus Heap: Magyk, Angie Sage's seven-book series, two years ago. Septimus Heap: Magyk revolves around two babies switched at birth, a boy who's the seventh son of a seventh son and a girl destined to be a princess.

No production date has been set.