Father Dowling Mysteries - Season 3 - Eps 6: The Undercover Nun Mystery
Sister Steve's return to her Mother's house to celebrate the convent's Silver Jubilee ceremonies should be a time of great joy for everyone. But shortly after arriving the Sister discovers a nun with a gun. Not quite what she expected. And her worst fears are indeed realized when another visiting nun is murdered.
About Father Dowling Mysteries

Title: Father Dowling Mysteries
First Air Date: 1989-01-20
Last Air Date: 1991-05-02
Status: Ended
Rating: 7.3/10 (from 23 votes)
Language: EN
Seasons: 4
Total Episodes: 43
Network: ABC NBC
Genres: Comedy, Crime, Mystery
Production Companies: Viacom Productions, Dean Hargrove Productions, Fred Silverman Company
Synopsis
Father Dowling Mysteries is an American television mystery series that aired from January 20, 1989 to May 2, 1991. Prior to the series, a TV movie aired on November 30, 1987. For its first season, the show was on NBC; it moved to ABC for its last two seasons. It is based on the adventures of the title character created by Ralph McInerny, in a series of mystery novels. The series was produced by The Fred Siverman Company and Dean Hargrove Productions in association with Viacom Productions.
Cast

Tom Bosley
Father Frank Dowling

Tracy Nelson
Sister Stephanie 'Steve' Oskowski

James Stephens
Father Philip Prestwick

Mary Wickes
Marie Murkin