They feature frequently in real-life murder documentaries and, until 2019 when The Jeremy Kyle Show was taken off air, were a huge focal point for reality TV shows. But what does it feel like to ...

Amit Katwala’s Tremors in the Blood charts the history of lie detectors with a series of gripping true-crime stories There is a fine topical gag in Agatha Christie’s 1925 novel The Secret of Chimneys, ...

“The polygraph has been weaponized and is being used against individuals who have never had a polygraph requirement, whether pre-employment or security, in their entire federal careers,” said Mark ...

Sex offenders could be made to take lie detector tests, as part of Home Secretary David Blunkett's plans to keep closer tabs on them. But while the polygraph is for some a truth serum, to others it's ...

These poor children were connected to a polygraph machine and asked intimate questions by their fathers. The results are guaranteed to make you squirm All children become practised in the fine art of ...

Police have hailed the use of a lie detector machine in their questioning of sex offender suspects after more than half confessed to their crimes when faced with the truth-telling polygraph. South ...

The science behind the lie detector test has been disputed since its creation 90 years ago, so is there any reliable way to tell if someone is lying, asks Dr Geoff Bunn, author of The Truth Machine: A ...

Here’s a video of Marston using a polygraph-like machine and claiming to identify the varying emotions of blonde, brunette and redheaded women. His conclusion was that redheads like to gamble, ...

A version of this story appeared in CNN’s What Matters newsletter. To get it in your inbox, sign up for free here. When President Ronald Reagan’s White House threatened thousands of government ...