Broadmoor Hospital sits in Crowthorne, Berkshire, and has held some of Britain's most notorious offenders, including Charles Bronson, Ronnie Kray, Peter Sutcliffe, and Kenneth Erskine. This film goes inside the country's oldest high-security psychiatric hospital, built in the mid-19th century, to look at how patients diagnosed with severe mental illness are treated and contained rather than simply punished. Interviews with patients and staff cover the daily routine behind the walls, the therapies used, and the balancing act between treatment and public safety that defines the institution. The staff describe working with people who are both patients and, in many cases, killers, and what that does to the ordinary business of running a ward. The film traces how attitudes and methods at Broadmoor have shifted since the Victorian era, from restraint toward psychiatric care, without losing sight of why the hospital's security has always mattered as much as its medicine.