Harm's Way by Catherine Aird

When a man and woman go out to scout a footpath for their groups trek the next day they think the hardest part might be clearing a path or dealing with a farmer who doesn't want them using the easement. However, today a crow drops a finger in their path. Since the local police normally keep things pretty clean, Sloan is called in to figure out what is going on and maybe try to find the rest of the body. 
The farm the finger is found on belongs to a man named Mellot, the brother of the man who owns the famous furniture store. Tom, the brother who owns the furniture, has just beaten off a takeover bid from a man who disappeared soon afterward. Len, a local, had a fight with a stranger at the local pub. Another farmer appears to have run away with a woman named Beverly. Any of them could be the body. Especially since, when Sloan does find the body , it doesn't have a head. 

Three and a half stars

This book came out in 1984

Follows Last Respects

Followed by A Dead Liberty

Borrowed as audiobook from Audible Plus

Opinions are my own