Someone at the heart of the case is found dead and future prosecutions are called into doubt. A new name takes centre stage. Who had access to the master keycards and what was their role in Michaela’s death? There are serious claims of attempted bribery.Presented by Allison Morris & Darragh MacIntyreProduced by Vinny Hurrell & Raphaelle O'LoanExecutive Editor: Andy MartinA BBC Northern Ireland ProductionIf you are suffering distress or despair, details of help and support are available at https://www.bbc.co.uk/actionline/