I'm currently reading Death on Lily Pond Lane by Carrie Dolye. This book is the second in the Hamptons Murder Mystery series.
It's the off season in the Hamptons and Antonia Bingham has taken on extra work looking after a few estates while the owners are away. At one of her stops Antonia is surprised to discover the car of a house guest who was supposed to have already left town. She is even more surprised to find his dead body in the bathtub! In an attempt to protect the homeowners and thinking the death is a tragic accident, Antonia removes what may be a vital piece of evidence. However, the victim had been making high powered enemies by filming a documentary expose. Could his death actually be murder?