Murder rocks the seaside town of Crab Cove, but to solve the crime, Detective Simon Grave must first deal with the curious incident of the cat in the daytime.

Murder has come yet again to the seaside town of Crab Cove, testing the mettle of Detective Simon Grave, his “almost invisible” partner, Sergeant Barry Blunt, and his new assistant, Charlize, a simdroid (an android lookalike of a famous person) who fancies herself a match for Sherlock Holmes, in the simulated body of Charlize Theron.

When a body is discovered on a deserted beach, alongside a deactivated Betty White simdroid, the game is afoot. Grave must not only deal with the murder, but also come to grips with a deadly prognosis for his retired detective father. The murder and his father’s illness take them on a tour of local cemeteries, including a new graveyard that features multiscreen videos celebrating the lives of the deceased.

They soon discover that the only way to solve the murder is to first deal with the curious incident of the cat in the daytime.