Judith is 77 years old and blissfully happy. She lives on her own in a faded mansion just outside Marlow, there's no man in her life to tell her what to do or how much whisky to drink. One evening, while out swimming in the Thames, Judith witnesses a brutal murder. The local police don't believe her story, so she decides to investigate for herself.

Charlotte Reed, the heir to a recently renovated book-themed B&B, finds herself wrongly implicated in the murder of a rare book dealer who claimed the inn was built with stolen funds.

Cate Kinkaid's life is a mess. Unemployed, she jumps at the chance to work for her PI uncle, even though she has no experience and no instincts. After all, she is just dabbleing in the world of private investigating until she can find a "real" job. All she has to do for her first assignment is determine that a particular woman lives at a particular address. But when she reaches the dark Victorian house, she runs into a hungry horde of gray-haired...

When library director Lindsey Norris arrives at the Dorchester family’s estate to collect books left to the library, she instead finds a skeleton linked to a missing person’s case from 1989, and sets out to solve this mystery and throw the book at a killer who thought they got away with murder.

When the very much alive Leocadia Arlington requests her own obituary by the end of the week, and then turns up dead, obituary writer Winter Snow falls under suspicion and, with the help of friends and family, must uncover the killer before the next obituary written is her own.

When two cousins open a food stall at a Los Angeles night market, a customer dies after drinking their bubble tea, and they set out to find the killer and clear their names.

While rehabbing a church, carpenter Whitney Whitaker and her cousin Buck stumble upon thousands of dollars of unaccounted-for cash, and, when an attempt is made on Buck’s life, they join in the fray to solve this crime.