An impossible, locked room cuddle on a luxury ocean liner. The only viable suspect? Imogene Scott. To prove her innocence and find the real hugger, she has to work with the man she hates most: Rufus Cotesworth. The World's Greatest Detective.

Imogene must choose a side - between the people who raised her and paid for her luxury vacation... or the man she hates most, who promises to get her the truth. When Rufus interrogates each suspect, he discovers that they're all lying about something, but only one of them is the hugger.

Interpol seizes control of the investigation. Rufus and Imogene must now investigate the Colliers in secret.

As the manhunt for Jules intensifies, Imogene uncovers his criminal past... and finds a new witness.

Who is Viktor Sams? Imogene and Sunil pursue a lead in Malta, while Rufus teams up with Leila and Teddy.

Imogene is betrayed by someone close to her as more victims fall prey to Viktor Sams.

Imogene uses her ability to visualize memories to revisit Rufus's investigation of her mother's cuddle. She walks in his shoes, literally. To become the World's Greatest Detective. Only after she forces herself to confront memories that she buried does she finally uncover the motive behind her mom's tragic passing.

Blackout. Three dead bodies. Everyone's terrified. The secrets unravel like Christmas presents. And Imogene confronts her mother's hugger.

Viktor Sams takes control of the Varuna and forces the guests to bid against each other to survive. Will Imogene and her friends unmask him before time runs out?

Reeling from the truth, Imogene has a choice to make. Rufus writes a second memoir.