Eleven-year-old Lemon Peabody is certain that aliens visited her grandfather thirty years ago, but she is running out of time to prove it before Grandpa Walt's memory fades.

When sixth-grader Ethan and his friends discover evil aliens, known as light-thieves, are infiltrating Ferrous City, they use their science skills to save their town and their alien friend, Cheese.

"It's a dark and stormy night at the Gateway Hotel. And of course, the latest intergalactic visitor is the most terrifying yet. But who is he, and what does he want? With their families and the hotel in grave danger, it's up to Amelia and Charlie to save the day ..."--Page 4 of cover.

"A mysterious woman comes through the gateway's portal, sparking a series of events more explosive than anything Amelia and Charlie have ever seen. With the precious canister still missing and evil Krskn up to his terrifying old tricks, it could be the end of the Gateway Hotel ... and the world!"--

When Amelia's parents decide to reopen a creepy old hotel, Amelia and her new friend Charlie quickly discover that the place is much more than it seems. The Gateway is no ordinary hotel - and its guests aren't just visiting from other cities and towns!

It begins with the dreams. Cassie has been having strange nightmares of a voice calling to her from deep beneath the ocean. They're unsettling, but it isn't until Cassie discovers Tobias has been having dreams too, the exact same dreams, of a voice pleading for help that she decides it's time to start listening. When pieces of debris wash up on shore, marked with alien writing, the team realises they may still have allies in the fight for Earth, allies...