How do you solve a murder in a post-fact world? Especially when sailing the Mediterranean on an ocean liner filled with the wealthy and powerful. Everyone on board is hiding something… but is one of them a killer? That’s what the world’s once greatest detective, Rufus Cotesworth, and his protégée, Imogene, aim to discover.

Nick and Molly, commitment-phobic and busy professionals with little in common, are asked to be the best man and maid of honor at the wedding of their mutual friends, Amy and Jamie.