Lee Montague's sportscars 1600 RW and 77 RW are actually two of the very earliest E-Type Jaguars ever built. 77 RW was a production prototype and was the actual car which launched the model at the 1961 Geneva Motor Show. It still exists and was seen in a 2011 episode of Top Gear (2002). 1600 RW was the first E-Type roadster in right-hand drive ever sold; its first owner was 'Lofty' England, Jaguar's racing team manager and engineer.
Opening credits: All characters and events in this film are fictitious and any similarity to actual persons and events is purely coincidental.
The film was subsequently released for television under the title Man at the Carlton Tower (1961), similar to the other 'Edgar Wallace' films in this series.