Blue Twilight (Paperback, Original ed.)

A mysterious vampire has the town of Endover, New Hampshire, in thrall, and now female tourists are disappearing. When found, they have no memory of where they've been or what's happened to them. Maxine Stuart, a private investigator specializing in the paranormal, takes the case when a friend's daughter goes missing. Now, together with retired cop Lou Malone, she finds herself up against a force even she isn't ready for.