Magpie by Elizabeth Day

Magpie is a psychological thriller about Marisa, who moves in with her boyfriend Jake and tries to start a family. When they take in a lodger, Kate, things take a strange turn—Kate becomes overly familiar, and Marisa begins to suspect her intentions.

As tensions rise, a major twist reveals deeper truths about obsession, fertility struggles, and identity. The novel explores the emotional impact of infertility, the complexities of female relationships, and how far people will go to get what they want.