Claire Takata has never known much about her father, who passed away when she was a little girl. But on the anniversary of his death, not long before her seventeenth birthday, she finds a mysterious letter from her deceased father, addressed to her stepfather. Claire never even knew that they had met.Claire knows she should let it go, but she can't shake the feeling that something's been kept from her. In search of answers, Claire combs through anything that will give her information about her father... until she discovers he was a member of the yakuza, the Japanese mafia. The discovery opens a door that should have been left closed.So begins the race to outrun his legacy as the secrets of her father's past threaten Claire's friends and family, newfound love, and ultimately her life.