Bless Me Father (1981) (S3 Ep5)

Ep 5: A Legend Comes To Stay. Father Duddleswell is not feeling at the top of his health, with his lumbago troubling him and Billy Buzzle's New Year party (despite this shown in August!) keeping him awake. But the thing that sends him over the edge is the arrival of his own mentor when he was a young man, Father Abe - a drinking, smoking gambler who decides that he wants to stay and help run the Parish whilst Father Duddleswell is ill. Things just got a lot worse...

Starring Arthur Lowe, Daniel Abineri, Gabrielle Daye, Peter Copley, David Ryall, Sheila Keith and Patrick McAlinney. As mentioned, this episode - despite the mention of New Year - was actually broadcast on August 2nd 1981!