A parallel novel is an in-universe pastiche piece of literature written within, derived from, or taking place during the framework of another work of fiction by the same or another author with respect to continuity. Parallel novels or "reimagined classics" are works of fiction that "borrow a character and fill in his story, mirror an 'old' plot, or blend the characters of one book with those of another". These stories further the works of already well-known novels by focusing on a minor character and making them the major character. The revised stories may have the same setting and time frame and even the same characters.

Wicked: The Life and Times of the Wicked Witch of the West is an American novel published in 1995, written by Gregory Maguire with illustrations by Douglas Smith. It is the first in The Wicked Years series, and was followed by Son of a Witch, A Lion Among Men, and Out of Oz. In 2003, it was adapted as the Tony Award-winning Broadway musical Wicked. The musical is in the process of being adapted into a two-part feature film, with the first film scheduled to be released in November 2024 and the second film in November 2025.