Undated Broadcasts Identified: Five Minute Mysteries and The 5

Undated Broadcasts Project — Reaching 4,973 Broadcasts (27 from 5,000)

Advancing within striking distance of a historic project watershed, the completion of This update brings the cumulative resolution total to 4,973 verified broadcasts, placing the Master Undated Broadcast Resolution Pipeline just 27 broadcasts shy of the landmark 5,000-broadcast milestone.

Continuing our sequential restoration of Five Minute Mysteries (d0da018b-4e33-4985-80f4-9933b6ca0cf8), this update resolves an additional 50 sequential syndication broadcasts (Episodes 113 through 162).

Spanning mid-century weekly transcription syndication by the Frederic W. Ziv Company from April 24, 1950 through April 2, 1951, this sequence showcases increasingly intricate forensic puzzle construction, pitting Inspector James against elaborate criminal alibis:

• Mechanical Physics & Scene Forensic Puzzles (Episodes 113–137): Standout investigations include "Murder Under The Big Tent" (circus aerialist death staged as an equipment failure, unraveled through rigging tension and sawdust footprints), "Murder In The Tomb" (archaeological crypt homicide exposed by sealed oxygen depletion and undisturbed dust stratification), "Plane Crash Death" (altimeter tampering and fuselage stress forensics disproving accidental pilot error), and "Squealing Gearshift aka Lady Garage Mechanic" (automotive transmission gear-tooth wear disproving estimated travel speeds).
• Acoustic Clues & Chemical Detection (Episodes 138–162): Stories delve into specialized scientific clues, featuring "Radio Station Murder" (broadcast control room acoustic bleed and microphone switching timings), "Three Scarlet Letters aka Life's Blood" (microscopic blood spatter analysis and chemical reagent staining), "Death At X Bar" (ballistic angle and powder burn forensic trajectories), and "The Book Case".

Adherence to Archival Standards & Empirical Provenance

Adhering strictly to .cursor/skills/radioindex-transcript-enrichment/SKILL.md and the methodology set forth in our foundational research paper, "Dating the Undated: Newspaper Radio Logs as Primary Evidence for a Quarter-Million Broadcast Recordings" (Radio Index, 2026):

• Surviving transcription discs undergo direct speech-to-text processing using Whisper SPEECH RECOGNITION, generating synchronized WebVTT subtitle manifests and grounding 1-sentence episode synopses in verified spoken dialogue with whisper:<sha256> provenance annotations.
• Under our strict no invented details mandate, broadcasts with missing audio assets remain completely unembellished, preserving Mark A–E discographic integrity (ARSC Guidelines for Discographies; Chicago Manual of Style, 18th ed.).

Standing now at 4,973 broadcasts resolved across 104 completed updates, the Undated Broadcasts Project is poised on the threshold of 5,000 resolved broadcasts across the golden age of American broadcasting.