Neil and Andy address the controversial issue of Shamima Begum, and whether it's right that she was stripped of her British citizenship, in this week's bonus episode. Neil recalls the moment when the then Home Secretary Sajid Javid interrupted his meeting with Prime Minister Theresa May to announce that he'd made that decision - and the pair discuss whether Begum should be allowed back in the UK now.

They also answer your questions on stop & search: invaluable tool for fighting knife crime, or a tactic which damages community relations beyond repair? And what exactly does 'county lines' mean? Andy explains and Neil reveals why it poses such a major problem for British police forces.

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Andy is one of only a very small number of journalists to have successfully gone undercover and infiltrated the far-right. In this episode, he reveals for the first time what happened when the group found out his true identity - and why he needed a visit from the bomb squad and around-the-clock police protection.

Andy also explains why people are attracted to join these groups for real - and tells the story of what he was asked to do for his initiation into one of the UK's most dangerous far-right gangs.

Plus Neil explains the history of the far-right in Britain, from Sir Oswald Mosley to the recently proscribed Maniacs Murder Cult and Russian Imperial Movement. He also talks about why the decision to ban the group National Action was so controversial when he was in charge of counter-terrorism policing in 2016.

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One year ago, Lucy Letby was convicted of murdering seven babies while working as a nurse at the Countess of Chester Hospital. Many believe she was the victim of a miscarriage of justice - and in this week's bonus episode, Neil and Andy answer your questions on the idea that police were briefing against Letby to journalists during her trial. Andy covered that trial - so did that really happen? And can we have confidence in her conviction? Listen to find out what The Crime Agents think about the story that shocked the nation.

Neil and Andy also respond to your questions about gangs: how much is social media used to recruit youngsters? Do teachers have a role to play in stopping kids from being exploited by gangs? And how common is it for women to play important roles in gang crime?

Plus Neil explains why it's right that MI5 and the government aren't forced to reveal all their intelligence when banning groups such as Palestine Action. And finally - Neil and Andy both reflect on some of the most memorable cases and stories they've worked on in their long careers fighting and covering crime.

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