Murder by Kindness — Barbara Graham

The residents of tiny Park County, Tennessee plan to celebrate Valentine's Day in style with a community fund raiser. Sheriff Tony Abernathy's dream of a crime free county explodes, along with an illegal still. An underage driver, bar fights and the arrival of a popular young movie star with his entourage promises to keep his small staff busy.
Theo, Tony's wife, is pulled away from her quilt shop by a phone call. Her best friend Nina is out of town and water is pouring from her house and over her ex-husband's corpse.
The county chaos increases with another suspicious death, the arrival of some extra wives, exploding stills and Cupid leaving a trail of paper hearts.