Episode 2, "The Adventure of the Lover's Leap," is a step up from its predecessor in that Ellery (Jim Hutton) works closely with his father, Inspector Queen (David Wayne), in much the same way that he would throughout the series, the banter between them always a delight, in this case focusing on the return of arrogant radio sleuth Simon Brimmer (played to smug perfection by John Hillerman), who first appeared in the pilot feature. The title refers to one of Ellery's books, the current read of wealthy heiress Stephanie Kendrick (Ida Lupino), who does not love her latest husband (Craig Stevens) and plans to divorce him. As she reads about footsteps at her door, she actually hears them in the hallway; when the book relates the howling of a dog, she hears that too. The final passage has the heroine jump to a suicidal death from her own balcony, and that is indeed where Mrs. Kendrick's corpse is later found by her husband's daughter (Susan Strasberg), as she arrives at the house, following a frantic call from the now dead woman. In the morning, the husband is found wandering the streets after a night of drinking and gambling. Another suspect is the live-in nurse (Anne Francis), who was of the opinion that the deceased did not need a caretaker, and was recommended by the family attorney (Jack Kelly). Then there is Dr. Norman Marsh (Don Ameche), the psychiatrist trying to help Mrs. Kendrick through deep hypnosis, an angle seized by Simon Brimmer, always uncovering certain facts before the police do, a constant source of irritation for the harried Inspector. James Lydon (formerly Henry Aldrich), who appeared as a radio actor in the pilot, performs similar duties here (for the last time), while actress Nina Roman makes her series debut as Grace, Inspector Queen's secretary, returning in 6 more entries, occasionally unbilled. John Hillerman would ultimately make six more appearances as Simon Brimmer, for a total of 8 (including the feature pilot). Incidentally, the Abbott and Costello sketch heard on the radio before the murder was taken from their 1955 feature film "Abbott and Costello Meet the Mummy," while Anne Francis and Jack Kelly are reunited from the 1956 "Forbidden Planet."