Cutting Edge Season 22 Episode release dates & where to watch

1. Jackpots and Jinxes: Lottery Stories

A look at National Lottery winners past and present, focusing on how these new millionaires deal with their fortune.

2. A Very Dangerous Doctor

3. Breaking a Female Paedophile Ring

An in-depth forensic look at a child abuse ring detailing how it operated, and what motivated the five people within it.

4. Attack of the Trip Advisors

5. Confessions of an Undercover Cop

Features interviews with the police to reconstruct the story of how Mark Kennedy went from being a regular south London police officer, with a wife and two children, to becoming Mark Stone. This was Mark the environmental campaigner, militant activist and undercover cop who broke into power stations, learned how to make bombs, infiltrated groups hell-bent on attacking major corporations and stood arm-in-arm with anti-capitalist anarchists. He also had a relationship with a female activist for four years and was even beaten up by fellow police officers who were unaware he was undercover. All the time he was feeding intelligence back to his handlers. Now, with his cover blown, he lives in fear for his life. He is separated from his wife and family. The woman he fell deeply in love with as Mark Stone never wants to see him again. For the first time, Kennedy is returning to face up to himself, his actions and to the people who claim he betrayed them.

6. The Ultimate Guide to Penny Pinching

The Ultimate Guide to Penny Pinching talks to several people who go to extreme length to save money. Judith uses coupons and vouchers to save money at the grocery store. Jonathan finds and cooks roadkill in order to save money on meat. Rebekah and Stephen plan an extremely thrifty wedding. Jalaj uses technology to maximize his savings.

7. King of Christmas Lights

This film explores the world of extreme Christmas decorating, meeting three of the UK's most obsessive, eccentric and lovable people who simply live for adorning their houses in festive regalia every year.