The Mattigan kids don't believe in things that go bump in the night. After all, their dad is famous for proving such things are impossible. But, when their long-lost Grandpa Joe shows up with his Myst
With Bigfoot safely stashed in their basement, Maddie, Max, and Theo Mattigan are off to Las Vegas with their dad. His plan is to prove there are no aliens on the loose there. But now that his kids kn
Maddie, Max, and Theo have come to the most haunted neighborhood in the most haunted city in America—and they're staying in the spooky Vampire House. While their father searches for evidence to prove
Things are getting complicated for Maddie, Max, and Theo. After all, it's not easy to hide a Sasquatch, an alien, and a vampire in your basement. So it's a relief to head out on another mission with t
Living life as a bumbling breadbox with fur, was hardship enough for Theodore the Corgi, but when the young dog finds himself cold and alone in a frightening animal shelter, it’s clear that his strugg
In book two of the series, Theodore and Sam have been transported, while reading their book together, to the land and time of Robin Hood. Now, they must figure out what happened and how to get back to