The Midsummer Murders

When all that is left of an elderly witch is a mummified corpse that is rapidly crumbling to dust, magic must be to blame, But what Natalie Taylor, high priestess of the local coven, finds when she investigates makes no sense. There is no magic present. None at all. She'll have to leave it to the coroner to find the cause of death this time. But when two more witches crumble to dust, it doesn't matter if she's dealing with magical murder or a murderous plague; the quirky residents of Giles are in mortal danger. Can she discover what is killing witches before it takes someone she loves?