CID investigates when a gang of youths carries out a number of audacious daylight robberies, and Emma is stabbed during the undercover operation. Witness Josh makes a startling confession to Nikki, and his behaviour gives her cause for concern. Meanwhile, Mia is awkward with John following the previous night's encounter – and Mickey guesses what went on. Will and Dan arrest a member of a gang of steamers, and Terry and Mickey investigate an assault on the boy's mother. Will hears a shocking secret from Emma's past. (thetvdb.com)