title: Crystal Tides
author: Connolly, Lynne
description: Kai had just about given up on love -- until he met sexy merman Tyler and Tyler's wife Zoe. The three heat Kai's hot tub to scorching together, but now Kai's seen something he wants and he plans to have it. He doesn't want another fleeting relationship. He wants Tyler and Zoe. For keeps.
  
  Zoe's not sure she can commit to two men, but when danger threatens the underwater archaeological excavation she's working on, she needs them both to protect. Zoe and Tyler's oldest enemy has returned. They've always run from him, but now it's time to turn and fight.
  
  But Tyler's going to have to trust Kai to protect the love of his life. Can he?
  
  Publisher's Note: This book is a never-before released story in the Dept. 57 series and contains explicit sexual content, graphic language, and situations that some readers may find objectionable: Anal play/intercourse, male/male sexual practices, ménage (m/f/m), sex in partially shifted form, violence.
  
  **Series: Department 57; Previous Book: Treasure Laid Bare
  **Series Note: Although part of the Department 57 series, this title can be read on its own.