A priest is murdered and the main suspect is a nun.
| Actor | Role |
|---|---|
 Raymond BurrPerry Mason | Perry Mason |
 Barbara HaleDella Street | Della Street |
 William KattPaul Drake Jr. | Paul Drake Jr. |
 Timothy BottomsFather Thomas O'Neil | Father Thomas O'Neil |
 Jon CypherDr. Peter Lattimore | Dr. Peter Lattimore |
 Michele GreeneSister Margaret | Sister Margaret |
 James McEachinLt. Ed Brock | Lt. Ed Brock |
 Gerald S. O'LoughlinMonsignor Kyser | Monsignor Kyser |
 William PrinceArchbishop Stefan Corro | Archbishop Stefan Corro |
 Edward WinterJonathan Eastman | Jonathan Eastman |
 Barbara ParkinsEllen Cartwright | Ellen Cartwright |
 David Ogden StiersD.A. Michael Reston | D.A. Michael Reston |
 Tom BosleyFather Chris DeLeon | Father Chris DeLeon |
 Arthur HillThomas Shea | Thomas Shea |
 Hagan BeggsRichard Logan | Richard Logan |
| DDonna CoxNot listed | Not listed |
 Alex DiakunOliver Lane | Oliver Lane |
| DDennis P. KelliNot listed | Not listed |
 Jane MortifeeNot listed | Not listed |
 David PetersenNot listed | Not listed |
| MMarie StillinNot listed | Not listed |