Choice Classic Radio Detectives | Old Time Radio
Episode: The Falcon: "The Case of the Jack of Diamonds" (Original Airdate: 09/07/1952)
Podcast Release: February 12, 2026
Host: Choice Classic Radio

Episode Overview

This classic episode features Mike Waring, "The Falcon," and throws listeners into a tale of blackmail, murder, and intrigue set in London's shadowy corners. When the American detective is dispatched by Army Intelligence to help unravel a blackmail plot centering around a gambler, secrets soon escalate into murder. The story unspools through sharp dialogue and quick twists—keeping listeners on the edge of their seats as motives and allegiances shift until the case's dramatic resolution.

Key Discussion Points & Plot Developments

1. Introduction to the Mystery (00:17–01:36)

• Mike Waring ("The Falcon") is called to London on Army Intelligence business to investigate a gambler seemingly involved in high-stakes criminal activities.
• Setting the Scene: The action begins in London's posh Sherry bar where Diane Halsey, a glamorous blonde, awaits Bruce Graham.

2. The Blackmail Plot Unfolds (01:36–07:16)

• Diane Halsey pressures her reluctant companion, Bruce Graham, to confront the mysterious Julio DeSantis and exchange incriminating photostats for £2,000.
• Mistrust and Tension: Graham doubts the authenticity of the evidence and the shadowy "Jack Diamond," who provided the documents.
• Transaction Scene (03:32–05:41): Graham attempts to blackmail DeSantis; the encounter is tense but nonviolent, with DeSantis surprisingly compliant.
  • "You got the money, I got the Photostats. But I don't think I want to do this again." — DeSantis (05:28)
• Diane's Ambition: She reveals her plan to extort DeSantis repeatedly, using multiple copies of possibly damaging documents.

3. The Stakes Escalate (07:37–09:42)

• Graham uses the photostats as leverage, upping his demand to £25,000.
• DeSantis, consulting with his employee Ronnie Peyton, contemplates giving in, as Peyton advises:
  • "If I were in a jam, I'd give this Mr. X whatever he wanted." — Ronnie Peyton (09:13)
• Jack Diamond (the enigmatic middleman) insists Diane call off Graham’s next meeting, fearing exposure.

4. Enter The Falcon – Mike Waring Gets Involved (10:29–12:28)

• Graham seeks help from Mike Waring, hinting at urgency and possible danger. Before Waring can meet him, Graham is killed mid-phone call (12:28).
• Waring, investigating the crime scene, encounters Inspector Beam of Scotland Yard, who remains skeptical.

5. Following the Clues (14:07–18:07)

• Waring and Beam find a note suggesting DeSantis was to meet Graham.
• Waring confronts DeSantis, who claims innocence, offers an alibi but finds his witness Ronnie missing.
• The focus shifts: Could DeSantis actually be the murderer, or was Graham's extortion connected to Communism or fascist secrets?

6. Tangling with Jack Diamond (17:35–19:48)

• Jack Diamond pressures Waring to leave London, offering intelligence on Communist cells in Paris as a lure.
• Tension peaks in a confrontational scene:
  • “Don't you know when you're well off? You shouldn't let yourself be carried away like that, Jackie. It's bad for your health.” — Mike Waring (19:07)

7. Diane Halsey Interrogated (20:08–22:44)

• Waring tracks down Diane, posing as an insurance investigator to uncover the truth.
• Diane is revealed to be a pivotal connection between Graham and Jack Diamond.
• Waring deduces "Jack Diamond" is an alias for Ronnie Peyton, DeSantis’s trusted employee.

8. The Final Pieces (22:44–27:11)

• Diane confronts Ronnie/Peyton about the blackmail, threatening him for a share of the money or she'll betray him to Waring.
• In a heated exchange, Diane is nearly strangled, but is found alive by Waring and the police.

9. Resolution and Revelation (27:12–29:06)

• Ronnie claims innocence in Graham's murder, providing a cinema alibi.
• Waring exposes DeSantis as the true killer:
  • “How could Ronnie have killed Bruce Graham when we both know it was you? Hey, now we—” (27:11)
• Motive Unveiled: Waring speculates DeSantis was a former fascist being blackmailed about his past, not a communist as initially suspected.
• Diane is arrested for her involvement in the blackmail scheme.

Notable Quotes & Memorable Moments

Banter and Suspense

• “You got the money, I got the Photostats. But I don't think I want to do this again.”
  — DeSantis (05:28)
• "Don't you know when you're well off? You shouldn't let yourself be carried away like that, Jackie. It's bad for your health."
  — Mike Waring to Jack Diamond (19:07)
• "You are talented, aren't you?"
  — Diane Halsey, impressed/annoyed with Waring's deduction (28:28)
• "Because making a body like yours disappear is a dirty trick on me too."
  — Mike Waring to Diane, after she’s caught (29:00)

Key Plot Moments

• [12:28] Graham found dead right after calling for Waring’s help.
• [14:21] Discovery of the appointment note: “DeSantis, 9 Parkslove.”
• [22:44] Waring identifies Ronnie as Jack Diamond, the blackmailer.
• [27:11] Waring unmasks DeSantis as the murderer.

Timestamps for Important Segments

• 00:17: Falcon's assignment and arrival in London.
• 01:36: Introduction of Diane Halsey and Bruce Graham at Sherry bar.
• 03:32–05:41: Graham’s tense exchange with DeSantis.
• 07:37: Graham extorts DeSantis for a higher sum.
• 09:42: Ronnie advises DeSantis on blackmail.
• 10:29–12:28: Graham killed; Waring joins the case.
• 14:21: Clue found: DeSantis's meeting with Graham.
• 17:35–19:48: Confrontation between Waring and Jack Diamond.
• 20:08: Waring's revealing interview with Diane.
• 22:44: Waring suspects Ronnie is Jack Diamond.
• 27:11: DeSantis exposed as killer; case unravelled.
• 28:14: Waring speculates on DeSantis's real secret.

Tone and Style

The episode unfolds with the rapid banter and clipped delivery typical of Golden Age radio detective dramas. The Falcon's cool, sardonic edge is matched by Diane's sly ambition and the colorful suspects’ nervous energy, sustaining intrigue and tension until the final reveal.

Conclusion:
In "The Case of the Jack of Diamonds," The Falcon teams up with Scotland Yard to unravel a layered plot of blackmail and murder. With sharp twists, double-crosses, and a surprisingly complex motive rooted in political history, the episode delivers classic detective thrills, making it a standout in the series' canon.