Edwina Black, een langdurig zieke vrouw, overlijdt plotseling. Bij lijkschouwing stelt dokter Septimus Prendergast vast dat haar lichaam een dodelijke dosis arsenicum bevat. De verdenking valt op Edwina's man en onderwijzer Gregory, Gregory's maîtresse Elizabeth Grahame en Edwina's huishoudster Ellen. De aan thee verslaafde en trage inspecteur Martin van Scotland Yard krijgt de opdracht de dader te vinden.
Nee, helaas is The Late Edwina Black nog niet beschikbaar op Netflix in Nederland.
| Directing | Maurice Elvey | Director |
| Writing | David Evans | Screenplay |
| Writing | Charles Frank | Screenplay |
| Writing | William Morum | Theatre Play |
| Camera | Moray Grant | Camera Operator |
| Camera | Charles Earl | Camera Operator |
| Directing | Betty Harley | Continuity |
| Camera | Ceri Davies | Clapper Loader |
| Production | Gilbert Mandelik | Production Executive |
| Sound | John Cox | Sound Recordist |
| Sound | Allan Gray | Original Music Composer |
| Camera | Stephen Dade | Director of Photography |
| Costume & Make-Up | Elizabeth Haffenden | Costume Design |
| Directing | Buddy Booth | Third Assistant Director |
| Editing | Richard Marden | Assistant Editor |
| Writing | William Dinner | Theatre Play |
| Art | George Provis | Art Direction |
| Directing | Kenneth Rick | Assistant Director |
| Sound | Alan Blay | Sound Engineer |
| Sound | Norman Daines | Sound Supervisor |
| Crew | Peter Mullins | Scenic Artist |
| Sound | Ludo Philipp | Conductor |
| Costume & Make-Up | Betty Sherriff | Hairstylist |
| Directing | Jean Dyball | Continuity |
| Art | Edward Rodrigo | Property Buyer |
| Camera | Micky Dean | Focus Puller |
| Editing | Don Terrett | Assistant Editor |
| Art | T.R. Seddon | Draughtsman |
| Production | John S. Gartside | Production Manager |
| Editing | Douglas Myers | Editor |
| Production | Ernest Gartside | Producer |
| Costume & Make-Up | Aldo Manganaro | Makeup Department Head |
| Sound | Bert Ross | Sound Recordist |
| Crew | Vivienne Eden | Administrative Assistant |
