He was a hairdresser to dye for. The local ladies all deem Mr. John a wizard, so when Agatha finds a few grey hairs on her head—and the rinse she tries at home turns her hair purple—she makes a beeline for the handsome Evesham hairdresser. And as well as sorting out her hair it soon becomes clear the charming man also has designs on her heart—but their budding romance is cut short when Mr. John is fatally poisoned in his salon. Once again Agatha finds herself embroiled in a murder case. Was it one of Mr. John's many lady clients, all of whom divulged to him their darkest secrets? It's time for Agatha to get to the root of this hair-raising mystery!