Investigating the psychology behind gambling and using his unique combination of skills to create guaranteed wins, Derren proves his system works every time. Not only that, but he explains it fully to us at home. But how fool-proof is this system and will his participant, believing in him and his predictions, risk her life-savings on one more race?

I took a member of the public and I told her which horse would win in a certain race; when it did win she was intrigued and I did it again and again and she started to bet more and more money according to my system. She's scraped together every last penny she could find and she is risking it all on one final race. Is it really possible to predict every time which horse will win? Welcome to The System.

- Derren Brown