One of the best films I have seen in a long time. Engaging and suspenseful. Chicago in the 1940s. Also of interest is the following:

The inventor of the polygraph test, Leonarde Keeler, plays himself and puts on an interesting demonstration of the how the machine works. Whether he was the actual inventor is controversial{but he got the credit}. Jack Larson actually came up with the original idea, but Keeler added another measure to the machine.

This message has been edited. Last edited by: ZSMICHAEL,

Good idea for a good movie, so let's watch it... (link)

https://www.youtube.com/watch?v=bGOO9PfVFBg