The Agatha Christie Hour
The Case of the Middle-Aged Wife
S1 E1:
When Maria Packington's husband starts losing his head to his nubile young secretary, Maria turns to Parker Pyne to win back her spouse's affection. Mr Pyne advises his charge to kick up her heels and enjoy the companionship of young Clive Luttrell, and it is not long after that she finds romance entering her life once more.