The water keeper

"Murphy Shepherd is a man with many secrets. He lives alone on an island, tending the grounds of a church with no parishioners, and he's dedicated his life to rescuing those in peril. But as he mourns the loss of his mentor and friend, Murph himself may be more lost than he realizes. When he pulls a beautiful woman named Summer out of Florida's Intracoastal Waterway, Murph's mission to lay his mentor to rest at the end of the world takes a danger...