Trouble at Clenchers Mill by Diana J. Febry

Somebody wants Richard Fielding dead.
Richard was looking forward to making a fresh start with his new wife, Alicia when they moved into Clenchers Mill. Then the attacks started.
Detained in the hospital after an unusual accident, he dismisses the claim his new wife is trying to harm him. He’s convinced the property attacks are the childish pranks of locals annoyed by his plans for Clenchers Mill. As a successful property developer, he’s seen it all before. Mindful of Alicia’s reluctance to involve the police he instructs Kate and Simon to make discreet inquiries.
Kate and Simon are keen to find the culprit, but are inexperienced and blissfully unaware they are dealing with a determined killer toying with their prey before they strike. Their first case may prove to be their last.