Graham Masterton's credits as a writer include the bestselling horror novel The Manitou, and the top-ten bestselling Katie Maguire crime series. Scarlet Widow, published in 2016, was his first book to feature 18th-century apothecary Beatrice Scarlet.
'[Scarlet Widow and The Coven] are amazing mystery thrillers that will have you hooked from page 1' Love Books Group. 'Fans of Masterton's unflinching Katie Maguire det-fic [...] may wish to venture into the past with the author, where his craft as a bestselling horror writer is given freer rein' The Sunday Times Crime Club.