The Likeness, a novel by Tana French, is the second book in the author's Dublin Murder Squad series. In this installment, Cassandra “Cassie” Maddox returns to undercover work after a woman using Cassie's old undercover identity is found murdered. The victim looks just like Cassie, making officers wonder if the murderer thought he had killed Cassie. The novel explores the responsibility of individuals for taking care of what they create. Other themes include the connection between one's self-identity and family and the deceit of the criminal mind.