The only thing worse than getting stuck aboard a cruise ship with a murderer, is discovering that your ex is on board... Rachel Prince is drawn to investigate when the body of the leader of a Bucket List tour party is discovered in the library on the first day of her Antipodean cruise. Can this seemingly harmless group of elderly people have a killer among them? Rachel thinks she is living the dream. Taking a cruise around Australia and New Zealand as a guest lecturer and meeting up again with her best friend, cruise ship nurse, Sarah. The scene is set for the holiday of a lifetime! Difficulties abound for everyone when an interim chief of security causes countless problems and appears to take an intense dislike of Sarah. Not trusting the new chief to get to the bottom of the murder, Rachel investigates on her own, soon discovering that the dead woman from the Bucket List tour party had been receiving anonymous threatening emails. To make matters infinitely worse, Rachel's ex turns up on board, and things start to go horribly wrong.