Agatha Raisin and the Wizard of Evesham (Agatha Raisin Mysteries, No. 8)

The local ladies deemed him a "wizard." So when, to Agatha's horror, she finds several coarse gray hairs poking out of her head--and the rinse she tries at home turns her hair a lovely shade of purple--she makes a beeline for Mr. John, the handsome Evesham hairdresser who promises to work his magic on Agatha's coif. And the charming beautician also seems to have designs on Agatha's heart. But their future together is cut short when Mr. John collapses dead from poisoning in his salon--and Agatha suddenly has a murder case in her hair. Was it one of Mr. John's many customers, all of whom divulged to him their darkest secrets? It's time for Agatha to get to the bottom of this hair-raising mystery.