After being accused of a crime she didn't commit, heartbroken bad-girl Heidi gets stuck in detention with school geek Saffron and sparks fly.

In Locus and British Fantasy Award nominee Cassandra Khaw's first novel, a crew of diminished former criminals get back together to solve the mystery of their last, disastrous mission. But the universe's highly-evolved AI has its own opposing agenda... and will do whatever it takes to keep humans from ever controlling them again.

"Neely's monsters don't always follow her rules, so when the little girl under her bed, the man in her closet, and the disembodied voice that shadows her every move become louder, she knows she's in trouble. With a history of mental illness in her family, and the suicide of her older brother heavy on her mind, Neely takes a job as a tour guide in the one place her monsters can't follow--the caverns. There she can find peace. There she can pretend...