It's the rare fictional character who still resonates 150 years after first appearing on the scene. But Sherlock Holmes is as popular as ever as evidenced by the Pacific Science Center's new show: The International Exhibition of Sherlock Holmes.

It opens tomorrow and runs through January 8th. Rare artifacts from the estate of Sir Arthur Conan Doyle are included, like a signed letter from the author and a first edition copy of "The Hound of the Baskervilles."

Movie and theater props are also on display along with an interactive crime scene that invites fans to solve a mystery just as Holmes would have.

You can also win two round-trip tickets to London! There's a hollowed-out book hidden somewhere in the greater Seattle area. Clues will be revealed each day at noon for the next 8 days. Info about "The Case of the Missing Tickets" can be had here!