If you’re a good listener, or even half decent at holding a conversation, you’ll know the usual verbal cues.

A vague ‘We should catch up soon’ rarely means a diarised meeting, while ‘With the greatest respect’ usually means: ‘I’m about to destroy your incoherent argument in the space of a sentence’.

Having said that, even the most proficient liar can be betrayed by their body if the other party knows where to look. It’s something we’ve been trying to look out for in the biggest mystery in our life at the moment – whether Rose or Leah is the murderer in ITV’s new psychological thriller Cheat.

The four-part drama starring former Coronation Street actress Katherine Kelly as university professor Leah, and BAFTA award-winning Molly Windsor as her student Rose, puts into question whether Rose lied in her academic work and the consequences of Leah challenging her on it. And that’s before we even get to the murder that ominously hangs over the series. To be honest, we haven’t got the foggiest who to believe.

To try and help us sleep better, we spoke to psychologist and body language expert Dr Georgina Barnett to round up the non-verbal clues to look for.

A body language expert on the non-verbal lying clues you've been missing