Big Mac's secret is getting on top of him and he's not the only one who's reached their limit today.Painkillers are reported missing and suspected stolen. Big Mac's addiction is starting to affect his health. Mercedes threatens him to steal more drugs, but Big Mac eventually has to come clean to Noel and admit he has a problem. Noel is supportive and encourages him to go to an NA meeting, but will Big Mac bottle it last-minute?Rita suspects Mark's stalking her when Charlie informs her that a number of complaints have been made against her. When she looks into it, the patients don't exist. She feels safe with Iain, but when she goes home she discovers her bedroom has been trashed, and she's terrified.Jack has the day from hell and decides to leave to pursue his dreams in the travel industry.