Michael Mosley embarks on three journeys to understand science's last great frontier - the human mind - as he traces the history of the attempts to understand and manipulate the brain.
Episode 1
Michael Mosley traces the sinister ways science has been used to try to control our minds.
Episode 2
Dr Michael Mosley investigates how scientists have struggled to understand human emotions.
Episode 3
A look at how experiments on abnormal brains can reveal the workings of the normal brain.