We're back in Manchester's McGuinness Unit for one last time tonight, and two teenage boys are telling us about the voices they hear in their heads. 16-year-old George was a rather promising rugby player before his mental breakdown began, and 17-year-old Matty is having a hard time battling suicidal urges. Meanwhile, Beth, who has been an in-patient for four months now, may finally be beginning to overcome her eating disorder, just as the eye-opening series comes to a close.