Midsummer Madness by Barbara Ellen Brink

They say Lake Superior never gives up her dead. They also say you can’t keep a good man down. Sometimes spur-of-the-moment murders don't go as planned.

When Blake and Shelby Gunner are hired to find a stolen fishing boat, they never expect it will turn into a murder investigation. But after Jack’s dog, Arthur, discovers a stranger’s body in the water not far from the bed & breakfast, the Gunners are pulled in to solve the case. Discovering the man’s identity and why he was in town leads to a murky past with connections to a number of upstanding Port Scuttlebutt citizens. Can Blake and Shelby stop a killer before someone else is pulled beneath the waves of madness?