Played by same female actor:
Jo Smith: An actress who shows up at a seemingly empty theatre to audition for a play, Jo soon learns that things are not as they seem.
Fiona Smith: - Jo’s twin sister, Fiona is more into “human relations” than the theatre.
Played by same male actor:
Beverley Jones: One of the triplet Jones brothers, also known as Bob, Beverley has a guilty secret.
Vyvian Jones: A theatre director (and sandwich shop worker), Vyvian has a dark side—and a weak stomach.
Janet Jones: Yet another Jones brother who is a detective, and an amateur actor.