would be grateful if anyone can recognise this film.

a short[ about one hour] b&w film of i think late 50's possibly very early 60's shown in odeon/rank cinemas.

a robbery has taken place-i can't remember if bank or payroll or other- but the thieves use a van with a false compartment between the driver and the load space of the van to conceal the ill gotten gains.

may have been part of a series eg scales of justice but more likely i think a stand alone

suggestions greatly appreciated. thank you