
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 know Mysterious Monsters are real, they're making plans of their own...

The Mattigan kids are off to Las Vegas with their dad who plans to prove there are no aliens on the loose there, but the kids want to find out once and for all what's hidden in the notorious Area 51. Aligned to Common Core Standards and correlated to state standards. Chapter...