What's happening?

Alfred Hitchcock Presents: 2x19

A Bottle of Wine

Much to his annoyance, Judge Condon wife Grace has a boyfriend named Wally Donaldson. Condon tries to prove that he is all wrong for her. He invites Wally for a glass of wine which he tells him was purchased on Grace’s Spanish Honeymoon. After Wally drinks the wine, Condon tells him its poisoned when, in fact, it is not. Wally panics and kills Condon. When Grace appears Wally tells her about the wine. She reveals that she never had a honeymoon and had never been to Spain.

Alfred Hitchcock Presents: Season 2 Episode 19
Feb. 03, 1957