Prisoners Harbor (Santa Barbara Channel Mysteries Book 1)

The tide says he was in that cave before the ferry that brought him. Nell Ybarra runs a charter boat out of Santa Barbara Harbor to the Channel Islands — scientists, divers, and four or five times a year the Sheriff’s dive team, because she is cheaper than the county boat and closer than the Coast Guard. Then a kayak guide is found drowned in a sea cave on the north shore of Santa Cruz Island.