Mrs. Smith (played by Joan Miller) is a protagonist in Suspect.
Lady Althea Const (played by Joyce Heron) appears in Suspect.
Sir Hugo Const (played by William Devlin) appears in Suspect.
Dr. Rendle (played by Colin Douglas) appears in Suspect.
The Rev. Alfred Combermere (played by Richard Goolden) appears in Suspect.
Goudie (played by Enid Hewitt) appears in Suspect.
Janet Rendle (played by Yolande Turner) appears in Suspect.
Robert Smith (played by Eric Lander) appears in Suspect.