“Is hypnosis real, and if so how does it work? Does it have any practical uses and which of Hannah and Adam is most susceptible?”

This question came from two Curios, Peter Jordan aged 24 from Manchester and Arran Kinnear aged 13 from Bristol.

Arch sceptics Hannah and Adam visit stage hypnotist Ben Dali to find out if they are susceptible to the power of suggestion. One of them will be successfully hypnotised, but who will it be?

Along the way we hear about the history of hypnosis from Wendy Moore author of 'The Mesmerist'. Plus psychologist Devin Terhune explains what we know about the science of hypnosis today.

Presenters: Hannah Fry, Adam Rutherford

Producer: Michelle Martin

First broadcast on BBC Radio 4 in April 2019.