Cameras are allowed in to Lambeth Hospital’s Triage ward for the first time. In a postcode with the highest rates of psychosis in Europe, this is the A&E of mental health - where patients are at their most unwell. For the staff it’s all about risk management. The buck stops with psychiatrists like Dr Martin Baggaley who makes crucial decisions every day. Getting it wrong could have tragic consequences. We meet 45-year-old Oxford-educated high flyer Dominic who has just made a serious suicide attempt as he comes to terms with life on a psychiatric ward. We'll meet his wife and four children who are dealing with his life threatening illness. And we meet the staff who are grappling with how best to care for Dominic and other high risk patients.