Midnight #4

The main story, "Who Knows?", follows young detective Eddie Bartlett as he uses a lie-detector machine to interrogate Sam Payne, a night watchman accused of involvement in a warehouse robbery. Through a series of carefully constructed questions, Eddie attempts to expose inconsistencies in Sam's alibi, ultimately revealing that Sam was indeed present during the crime and calling in guards to arrest him. The story presents Eddie's clever use of the lie-detector as a thinking machine that proves Sam's guilt through logical deduction rather than the machine's mechanical readings alone.