What Makes a Psychopath? review – first-hand insights, but too few answers

This was a responsible look at a troubling subject, even if Ian Brady's inclusion felt like a gimmick. Plus, Celebrity Island with Bear Grylls

For some unknowable reason, last night's Horizon: What Makes a Psychopath? - an investigation into people who score highly for personality traits such as grandiosity, superficiality, lying, being easily bored, having short attention spans and an inability to empathise with others or feel guilt or remorse - felt timely.

Psychologist Prof Uta Frith was our guide on a tour of what defines and creates such a being and whether he (or presumably she, although there was no mention of a distaff counterpart to the men interviewed or referred to in the programme) can ever be successfully treated.