Lucy in the Sky is a 2012 book about a Santa Monica middle-class girl who suffers from drug addiction and alcoholism, much to the horror of her preppy brother, Cam, who is torn between loyalty and fear for her safety.

Released under various imprints of Simon and Schuster, the book received largely negative reviews from critics, being compared to older predecessor Go Ask Alice, which was also about drug addiction but set more-so around LSD and hippie counterculture.

Ross remains her friend, but gets her hooked on drugs and later alcohol, leading the diarist to experiment with numerous illicit substances including marijuana, cocaine and other things.

Lucy in the Sky received mostly negative reviews from critics, who compared the book to Go Ask Alice and also considered it too ineffective and silly in its approach to the subject matter of substance abuse.

Publishers Weekly stated, "echoing the theme and structure of Go Ask Alice, this inelegant cautionary tale paints an appropriately horrific picture of addiction, but offers little insight beyond what is taught in drug education programs.