Lost Cause by Susan Sleeman

Working together is a challenge…
Detective Burke Ulrich is known for his unyielding dedication to justice and his methodical approach to solving crimes. When a valuable family heirloom is stolen from a recluse’s rundown estate on mysterious Ravenhook Island, Burke is called in to investigate. Despite the theft appearing straightforward, Burke senses there is more to the case, especially given the homeowner’s mysterious history.

But catching a killer is their priority.
Enter former sheriff Abby Day, a sharp and resourceful Lost Lake Locator hired by the recluse to find the missing heirloom. Abby’s involvement immediately irritates Burke, who is wary of private investigators interfering in police work. However, as the investigation progresses, Burke and Abby uncover a complex web of deceit involving long-buried family secrets, and a string of unsolved crimes connected to the estate, ultimately uncovering a murder. Burke orders Abby off the investigation to protect her, but will she listen, or will she risk her life and a potential relationship with Burke to catch a killer?