The second episode of Evolution Season 2 introduces an unsub called The Zookeeper. (Hence the episode title "The Zookeeper".) Those wishing for Kevin James will be sorely disappointed, because it's a different fat guy altogether. Voit continues to (pretend to?) be simple, Rossi makes promises he can't keep, and at the end SOMEONE DIES. Other than the unsub. It's a thrilling hour of television if you've never seen television before.