Sanctum

The past is back to haunt them.
Dan, Abby, and Jordan remain traumatized by the summer they shared in the Brookline asylum. But someone is determined to keep the terror alive, sending the teens photos of an old-timey carnival. Finally, Dan receives a list of coordinates pointing to abandoned houses in the town near Brookline, and he is convinced that the only way to end this nightmare once and for all is to follow the trail. But when Dan and his friends arrive under the guise of a prospective students' weekend, they discover that the carnival from their photos isn't just real, it's here on campus. And that's just where the terrors begin. . . .
In this thrilling and creepy sequel to the New York Times bestselling Asylum, found photographs from real vintage carnivals help tell the story of three teens who exist on the line between past and present, genius and insanity.
Read all the mind-bending books in the Asylum series.

“With plentiful old photographs of carnival acts, Roux works the creepy verisimilitude that made Asylum such a page-turner. The haunted-house explorations are especially cinematic and spooky...Roux knows how to keep the action rolling and the reader hooked.” — Booklist
“Seriously spooky.” — School Library Journal