January, 1987: in the depths of winter, only joggers and dog walkers
brave the Thames towpath after dark. Helen Honeysett, a young newlywed,
sets off for an evening run from her riverside cottage. Only her dog
returns. Twenty-nine years later, her husband has asked Stella Darnell,
a private detective, and her sidekick Jack Harmon, to find out what
happened all those years ago. But when the five households on that
desolate stretch of towpath refuse to give up their secrets, Stella and
Jack find themselves hunting a killer whose trail has long gone cold.