大象传媒

Donal MacIntyre hears from ordinary members of the public who have chosen to dedicate their free their time to supporting and mentoring convicted sex offenders, including paedophiles, who say they do want to change. But can someone who's been convicted of a serious sexual offence ever become a trusted member of society again? Are these mentors naive, or does this type of engagement really help to rehabiliate sex offenders?

Also, Donal interviews Mosab Hassan Yousef, son of a founding member of Hamas, who changed allegiance by working as an informant for the Israeli Security Agency, Shin Bet. Described as their 'most reliable agent' he reveals the events which led him to switch sides.

And after the London bombs in July 2005 hundreds of dangerous extremists were convicted of terrorist related offences across the UK. Five years on, many are now being released from prison but are the government's "de-radicalisation" and rehabilitation programmes proving successful?

Contact the programme: donal@bbc.co.uk.