Melissa Ferguson’s Without a Clue is a rom-com wrapped in a high-seas whodunnit: a luxury book cruise full of bestselling authors, hundreds of fans, and exactly the kind of drama that makes a closed-circle mystery feel inevitable. Penelope “Pip” Dupont is the hyper-competent assistant to renowned mystery author Hugh Griffin, and she’s the one holding the whole event together—until Hugh turns up dead and the ship’s security proves useless.
From there, the book leans into its strengths: a fun ensemble cast, plenty of ego and misdirection, and the particular flavor of chaos that comes from putting writers (and their rivalries) in a confined space. Pip makes a great lead because her “keep it together” persona is both her superpower and her vulnerability, and the investigation lets her step out from behind the scenes and into the spotlight.
I also enjoyed the balance of humor and stakes. The banter and situational comedy keep the tone light, but the mystery still has forward momentum, and the romance thread adds an extra reason to care about who Pip trusts. The setting does a lot of work too—there’s something inherently satisfying about a murder mystery where no one can leave.
As an enjoyer of both rom-coms and cozy whodunnits, I found the blend of genres to be particularly appealing.
I listened to the audiobook version read by Karissa Vacker. The narration sells the comedic timing and the escalating “what is happening right now” energy, and it helped keep the large cast distinct as the suspicion started bouncing around the ship.
If you want a light, clever mystery with romantic tension, bookish in-jokes, and a cruise-ship locked-room setup, Without a Clue is an easy recommendation.


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