The Murder On The Links

Description for THE MURDER ON THE LINKS by Agatha Christie:

"For God's sake, come!"... The appeal for help arrived too late. Monsieur Renauld lay dead on the golf course just days after Hercule Poirot had received his letter. There was no lack of suspects: Renauld had possessed a plundered fortune, both a wife and a mistress, and an estranged son. But just when police think they have the culprit, the brilliant Belgian detective assures them that all is not as it seems. And the next murder proves him right.

This is #2 in A Hercule Poirot Mystery.