Jun 2, - Davis, who turns 55 today, had spent most of his adult life in prison and and murder of year-old Polly Klaas became the catalyst for California's "three strikes" law. Davis, S, can be read at Links of Interest to Adults. PTable · The Dynamic Periodic Table. An interactive, dynamic representation of the Periodic Table of Elements. Radio Lingua g: klaas | Must include: klaas.