Jayne Ann Krentz

Virginia Dean wakes at midnight beside a dead body, with a bloody knife in her hand and no memory of the evening's events. Dark energy, emanating from the mirrors lining the room, overpowers her senses. With no apparent way in or out, she is rescued by a man she has met only once before, but won't soon forget.

Welcome to Harmony—where the rules are a little different.
Life is tough these days for Lydia Smith, licensed para-archaeologist. Seriously stressed-out from a nasty incident in an alien tomb, she is obliged to work part-time in Shrimpton’s House of Ancient Horrors, a very low-budget museum. She has a plan to get her career back on track, but it isn’t going well. Stuff keeps happening.
Take the dead body that she discovered...

Charlotte Enright, having returned to the island of Rainshadow fifteen years after she and Slade Attridge ventured into the Preserve to run her aunt's antiques shop and been reunited with Slade, can tell from his aura that something is not right, but still finds herself strongly attracted to him, and, going back into the darkness of the Preserve with him after a series of violent crimes.