James Nesbitt returns as undercover cop, Tommy Murphy, in a three-part series of acclaimed drama Murphy's Law. Don't miss it! 1st, 2nd and 3rd October 2007. BBC One at 9pm.
Find out what makes Murphy tick via our interactive timeline
James Nesbitt and Peter Bleksley talk about the challenges of undercover policing
James Nesbitt selects a few scenes and discusses his approach to each
