Cold Files, Warm Tea is a gentle, well researched walk through historical mysteries that were never fully solved. Declan Mulvaney is a retired Garda archivist, and each fortnight he picks one case that is at least fifty years old, lays out what the original investigators actually knew, and then separates the documented facts from the folklore that grew up afterwards. There is no gore and no speculation about who did it for entertainment's sake. The people involved are treated as people. The format is a solo narration with occasional phone conversations with historians and retired detectives, and most episodes run around 40 minutes. It suits listeners who like the Somerton Man or the Isdal Woman more as puzzles of evidence than as thrillers, and who want to finish an episode knowing more and feeling calmer than when they started.