Broken is a novel by author Kelley Armstrong. In this novel, Elena Michaels, is the only known female werewolf. In addition to being the only female werewolf, she is also the only known pregnant werewolf. Elena is the protagonist and narrator. Elena takes readers into the lives of her family, her pack of werewolves, and the residents of Toronto as Elena accidentally triggers a portal that spits out zombies and Jack the Ripper from Victorian England.

When Elena and her pack are hired to steal a letter supposedly written by Jack the Ripper, none of them realize that the letter contains a magical spell. While reviewing the letter, Elena's blood accidentally lands on the letter. This triggers a whole series of events that starts with the opening of a dimensional portal.

As zombies start to roam the city of Toronto, Elena and her pack try to figure out how to stop Jack the Ripper and return everyone to their rightful places and eras. Elena's growing belly and progressing pregnancy continues to be a source of concern for the father and fellow werewolf, Clay, as well as the pack Alpha male, Jeremy.

By the end of the novel, the pack is able to return normalcy to the city of Toronto. Elena gives birth to twins - one boy and one girl. Everything seems to be back to normal or as normal as things can be in the lives of werewolves.