Podcast:CBS Radio Mystery Theater (Restoration) Published On: Tue Feb 17 2026 Description: 0443 - The Infernal Triangle (3/5/1976)Written by Ian Martin. Directed by Himan Brown.Cast: Morgan Fairchild; Joe Silver; Catherine Byers; William Redfield.Ann Fairchild has found happiness with her husband-to-be, Hugh Denning. But the return of Ann's older sister, Eve, threatens Ann and Hugh's romantic bliss and rekindles a sibling rivalry.CBSRMT Trivia: Morgan Fairchild plays a character named Ann Fairchild in this episode.