Last Ditch (1977)

THE FATAL CLUE

Inspector Roderick Alleyn's novelist son Ricky thought he had inherited none of his famous father's detective powers. Writing was his forte, and a picturesque British island off the coast of France seemed the perfect place to begin his book.

Until the riding death of a headstrong and very pregnant young local exploded the island calm. One tiny detail at the scene of the accident didn't quite fit, and soon Ricky found himself hot on the trail of bigger game than he could have imagined--an international drug ring which would try to use him to head off his formidable father!