Another Stabbing?

Another stabbing victim in The Murder on the Links?

Hey! What's that knife gotten up to now? There it is: stuck in the chest of a man found in the garden shed on Paul Renault's property. So the knife has killed again! 

Or has it? The coroner's not so sure. After he assesses the body, he finds insufficient blood outside the wound. So that means someone stuck the knife into the man after he died. Why would someone hide the body? And why would someone stage another stabbing?

It's just one more question for Hercule Poirot. But that's why we love Agatha Christie: She keeps us guessing.

Dragon Dave