Lost Hero by Rick Riordan

From GoodReads: Jason has a problem. He doesn’t remember anything before waking up in a bus full of kids on a field trip. Apparently he has a girlfriend named Piper and a best friend named Leo. They’re all students at a boarding school for “bad kids.” What did Jason do to end up here? And where is here, exactly?
Piper has a secret. Her father has been missing for three days, ever since she had that terrifying nightmare. Piper doesn’t understand her dream, or why her boyfriend suddenly doesn’t recognize her. When a freak storm hits, unleashing strange creatures and whisking her, Jason, and Leo away to someplace called Camp Half-Blood, she has a feeling she’s going to find out.
Leo has a way with tools. When he sees his cabin at Camp Half-Blood, filled with power tools and machine parts, he feels right at home. But there’s weird stuff, too—like the curse everyone keeps talking about. Weirdest of all, his bunkmates insist that each of them—including Leo—is related to a god.
Join new and old friends from Camp Half-Blood in this thrilling first audiobook in The Heroes of Olympus series.

If you enjoyed the Percy Jackson series, then you will LOVE this book! I started this book at 8:30 p.m. one night and, literally, my hubby had to pry it from my hands at 1 a.m. and force me to go to bed! 
In full Rick Riordan fashion, I couldn't put it down!  The characters of Piper, Leo, and Jason were amazingly written, the story was intermixed with Roman and Greek mythology, and the twists and turns were unforseen.  I strongly reccommend everyone check this book out! I promise that you will devour it!