Dav Pilkey stretches 'Captain Underpants' series ... where he lives part time with his wife. ... “These ‘mistakes’ occur in my books for a reason,” Pilkey said. “I have an agenda: ...

An interview with Dav Pilkey, author of the wildly popular “Captain Underpants” book series for kids. The Bainbridge resident appears at the University Bookstore on Sept. 11.