US Release date: 6 June 1949
First Melbourne Saturday Suburban: 28 October 1950
Genre: Crime
Country: UK
Running time: 70 minutes
Director: Val Guest
Cast: Garry Marsh, Jon Pertwee & Jack Livesey
Australian Distributor: BEF
Melbourne Premiere Venue: Union’s Grosvenor Theatre for three weeks from 28 July 1950 as support to Train of Events.
Suburban Release Type: Union 7-W-2
Rankings
| Rank | ||
| EF Points | 80 | 249 |
| EF PPE | 2.35 | 229 |
| Metres Travelled | 382,909 | 251 |
| Average MT | 11,262 | 37 |
| Engagements | 34 | 262 |
| Slots | 51 | 185 |
| Weeks | 17 | 84 |
| Weeks as % of engagements | 50.00% | 87 |
| Saturdays | 12 | 185 |
| Sats as % of engagements | 35.29% | 182 |
| Tuesdays | 5 | 261 |
| Tues as % of engagements | 14.71% | 263 |
| First billed | 0 | 263* |
| Second billed | 34 | 101 |
| Feature only | 0 | 34* |
Independent ratios
| Engagements weeks 1-10 | 25 |
| Ratio | 73.53% |
| Difference to chain ratio | -13.14% |
| Eng weeks 11-26 | 2 |
| Ratio | 5.88% |
| Difference to chain ratio | -1.74% |
| Eng weeks 27-52 | 7 |
| Ratio | 20.59% |
| Difference to chain ratio | 14.88% |
| Hoyts eng | 0 |
| Ratio | 0.00% |
| Difference to chain ratio | -0.84% |
| Independent eng | 26 |
| Ratio | 76.47% |
| Difference to chain ratio | -0.64% |
| Suburban eng | 8 |
| Ratio | 23.53% |
| Difference to chain ratio | 1.48% |
Notes: Val Guest’s quota quickie had some laughs and at least the promise of some glamour to gain 34 supporting engagements, mostly for Train of Events. Low rankings, but 80 EF points is probably more worthy than its threadbare budget deserved.
Murder at the Windmill engagements
| SUBURB | VENUE | CHAIN | DATE | W | D | B | CO-FEATURE |
| Burnley | Burnley | Independent | 28/10/50 | 1 | S | 2 | Train of Events |
| North Carlton | Adelphi | Independent | 28/10/50 | 1 | S | 2 | Train of Events |
| Albert Park | Kinema | Independent | 28/10/50 | 1 | W | 2 | Train of Events |
| Richmond | National | Independent | 28/10/50 | 1 | W | 2 | Train of Events |
| St. Kilda | Astor | Independent | 28/10/50 | 1 | W | 2 | Train of Events |
| Toorak | Village | Independent | 28/10/50 | 1 | W | 2 | Train of Events |
| St. Kilda | Palais | Suburban | 28/10/50 | 1 | W | 2 | Train of Events |
| West Brunswick | Western | Independent | 4/11/50 | 2 | S | 2 | Train of Events |
| Brunswick | Empire | Independent | 4/11/50 | 2 | W | 2 | Train of Events |
| East Malvern | Waverley | Independent | 11/11/50 | 3 | W | 2 | Train of Events |
| East Preston | Gowerville | Independent | 11/11/50 | 3 | W | 2 | Train of Events |
| Balwyn | Balwyn | Suburban | 11/11/50 | 3 | W | 2 | Train of Events |
| Ormond | Plaza | Suburban | 11/11/50 | 3 | W | 2 | Train of Events |
| Ashburton | Civic | Independent | 18/11/50 | 4 | S | 2 | Train of Events |
| North Brighton | Gardenvale | Independent | 18/11/50 | 4 | S | 2 | Train of Events |
| West Preston | Rivoli | Independent | 18/11/50 | 4 | T | 2 | Train of Events |
| Middle Brighton | Dendy | Independent | 18/11/50 | 4 | W | 2 | Train of Events |
| Sandringham | Roxy | Independent | 18/11/50 | 4 | W | 2 | Train of Events |
| Newport | Plaza | Independent | 25/11/50 | 5 | S | 2 | Train of Events |
| Surrey Hills | Surrey | Independent | 25/11/50 | 5 | S | 2 | Train of Events |
| Williamstown | Empress | Independent | 25/11/50 | 5 | S | 2 | Train of Events |
| North Richmond | Victoria | Independent | 25/11/50 | 5 | T | 2 | Train of Events |
| Oakleigh | Plaza | Independent | 2/12/50 | 6 | S | 2 | Train of Events |
| Box Hill | Regent | Suburban | 9/12/50 | 7 | S | 2 | Train of Events |
| Murrumbeena | Argosy | Suburban | 16/12/50 | 8 | S | 2 | Train of Events |
| Coburg | Plaza | Independent | 27/1/51 | 14 | W | 2 | Father of the Bride |
| Reservoir | Plaza | Independent | 10/3/51 | 20 | T | 2 | The Big Lift |
| Moonee Ponds | Moonee | Independent | 9/6/51 | 33 | W | 2 | The Miniver Story |
| Glenferrie | Glen | Independent | 16/6/51 | 34 | W | 2 | The Miniver Story |
| Hawthorn | Vogue | Independent | 16/6/51 | 34 | W | 2 | The Miniver Story |
| Camberwell | Rivoli | Suburban | 7/7/51 | 37 | W | 2 | The Golden Salamander |
| West Coburg | Progress | Independent | 8/9/51 | 46 | S | 2 | Harvey |
| Greensborough | Victory | Suburban | 8/9/51 | 46 | T | 2 | Edward My Son |
| South Melbourne | Empire | Suburban | 6/10/51 | 50 | T | 2 | In a Lonely Place |



