Staying with their aunts over the summer, Neil Cady, his sister Bree, and their new friends Wesley and Eric, set out to explore Graylock Hall, an abandoned psychiatric hospital which is supposed to be haunted by the ghost of Nurse Janet.

Seventeen-year-old Lauren has visions of girls her own age who are gone without a trace, but while she tries to understand why they are speaking to her and whether she is next, Lauren has a brush with death and a shocking truth emerges, changing everything.

After battling a supernatural sleeping sickness that early claimed two of their own, the Diviners have had enough of lies. They're more determined than ever to uncover the mystery behind their extraordinary powers, even as they face off against an all-new terror. Out on Ward's Island, far from the city's bustle, sits a mental hospital haunted by the lost souls of people long forgotten--ghosts who have unusual and dangerous ties to the man in the stovepipe...

Three teens who meet at Reno, Nevada's Aspen Springs mental hospital after each has attempted suicide connect with each other in a way they never have with their parents or anyone else in their lives.