Scotland Yard detectives attempt to solve a spate of safe robberies across England beginning with clues found at the latest burglary in London. The film is notable for using a police procedural style made popular by Ealing in their 1950 film The Blue Lamp. It is known in the US as The Third Key.

The Glass Key
1942
6.7/10

The Mirror Crack'd
1980
6.1/10

Lady in the Lake
1946
6.1/10

Black Angel
1946
6.1/10

Sapphire
1959
7.0/10

Nightfall
1956
6.9/10

Shadow of a Doubt
1943
7.5/10

The Blue Lamp
1950
6.6/10

Sleep, My Love
1948
6.3/10

Maniac
1963
6.2/10

The Blue Gardenia
1953
6.5/10

Blackmail
1929
6.5/10

Nancy Drew and the Hidden Staircase
2019
6.3/10

The Maltese Falcon
1941
7.7/10

Murder!
1930
5.9/10

Pickup on South Street
1953
7.4/10

The Red House
1947
6.3/10

Time Without Pity
1957
6.5/10

Odd Man Out
1947
7.3/10

Murder Most Foul
1964
7.1/10
Scooby-Doo 2: Monsters Unleashed
2004
6.12/10