Allan Urry investigates recent cases which raise questions about the quality of care delivered by some temporary staff. Should an agency doctor have better assessed a poorly surgical patient on his ward who died a short time later from a post -operative bleed? The programme also asks how well the agency sector is regulated following the revelation that a partly-qualified doctor was able to treat more than 3000 patients after lying about his qualifications.

Reporter: Allan Urry Producer: David Lewis.