When done right, the retrospective review can be a powerful antidote to counteract these tendencies.

FORBES: Radical Management: Get Better Faster

During Hyde's trial, the court heard that while he was being questioned by detectives from the PSNI's Retrospective Murder Review Unit in September 2008, he confessed to a number of offences and formally agreed to help police early in 2009.

BBC: No prosecution in Martin O'Hagan murder case