The last thing DS Stephanie Johnson and DS Andy Carter expected during their much-needed canal holiday was a murder. When retired folk musician Annie Shipton is found stabbed through the neck at the helm of her barge, the couple can't help investigating the seemingly impossible crime. Nobody else boarded Annie's boat--so how was she killed from behind?

With the method a perplexing mystery, DCI Oldroyd is summoned from Harrogate, and it's not long before the detectives have a long list of potential suspects with a motive to want Annie dead. There's the young cyclist she argued with over access to the towpath, an ambitious and arrogant local developer she clashed with repeatedly, an estranged husband...and more than a few lingering issues with her former bandmates, most of whom live along the canal.

When a second murder sends shockwaves through the community, the locals start talking about a curse on the waterway. It seems the killer will go to any lengths to avoid detection. But can Oldroyd hunt them down before someone else becomes the next target?