Ellie is deep into the Keystone Academy curriculum and the story opens with her on a mission to steal a voice recording from the Andy Warhol Museum collection. The famous artist was known for saving everything. While completing her goal, a colleague arrives and sneakily steals the cassette from her. So, she fails the mission. She moves on with other students to go undercover and learn as much as they can about a new program that’s based on whether free will is real or not. The group gets brain scans and disguises and they discover who’s trustworthy and who isn’t. This new program is a little too close to Ellie’s past and her old journal becomes a topic of interest and the story ends with a twist that leaves the opening for a third book in the Keystone series. Riddles and intrigue, 4 stars!