A judge has highlighted concerns about security procedures at a psychiatric hospital after a child killer escaped and raped a teenager. Secure hospitals, like prisons, house many patients who have committed serious and violent crimes. The case highlights failures in a system which is backed up by an investigation carried out by reporter Nicola Stanbridge. The Today programme found that at least 94 patients escaped from medium and low secure psychiatric hospitals, or while under the escort of hospital staff last year. Louis Appleby, the national director for mental health, says officials are reviewing the appropriate placement of restricted patients at the unit.