Lucy Kincaid expected to be able to keep her secret to herself, but when it's found out she has Siren blood from Pesta, the group turns on her. Jens disappears, Foss turns cold, and Britta leaves the group. When a darkness starts to grow in Jamie, Lucy suspects foul play. Her favorite prince uses his direct link to Lucy to torture her from the inside out. When Tucker makes an attempt on her life, Lucy must decide if her Merry Band of Thieves is worth saving.