Theater has always been at least partly about escapism, but two productions are taking that idea to the next level with downright magical plays about escape artist Eric Weiss, aka Houdini. The House Theatre of Chicago is celebrating its tenth anniversary by restaging its first show, Death and Harry Houdini, while Chicago Children’s Theatre is capitalizing on the box-office hit Hugo by adapting another Brian Selznick children’s story, The Houdini Box, into a lively musical featuring puppets and a set reminiscent of a pop-up book.