Agatha Christie's Poirot (1989)
S01E03 The Adventure of Johnnie Waverly
Episode Overview
Marcus Waverly, a country gentleman, seeks Poirot's assistance when his son faces alarming kidnapping threats. Hastings is horrified by the idea of child abduction, and together they embark on a frantic quest to uncover the identity of the enigmatic letter sender before it's too late.