Managing Uncertainty in Forensic and Expert Evidence Cases

This chapter examines issues arising from cases that turn on forensic and expert evidence, focusing on how the Criminal Cases Review Commission investigates such applications and makes its decisions. Drawing on a sample of sixty-one cases involving forty-two applicants, the chapter shows how the Commission makes decisions in cases that ‘turn on’ forensic science and expert testimony. It also considers the influence of developments in the ‘surround’ of the Commission and how the surround affects the Commission's decision field — the broad setting within which decision-making at the Commission takes place. Finally, it analyses the role of decision frames in the Commission's decision-making on forensic and expert evidence cases, noting that such frames are characterised by uncertainty and even anxiety. Concerns about the interpretation and presentation of forensic evidence at trial are discussed, along with the legal and narrative frames of decision-making in forensic and expert evidence cases.