Time buddies. 2, Past, present, hooture

"Hoot and Bentley know the most important rule of time travel: Don't mess with history--especially your own history! Still, a quick trip can be hard to resist when you really, really need to ask your future self an important question--or get your grandpa the coolest birthday gift ever. But after a visit to the roaring (or were they mooing?) twenties, a groovy trip to the disco era, and an adventure in the world of Sherlock Holmes, our favorite pa...