The Morris tribunal resumes today after the summer recess, and over the next two weeks the "silver bullet" module is expected to be completed.
The garda at the centre of allegations of corruption, Det Sgt John White, will for the first time have the chance to give his evidence at the tribunal. He is denying all allegations against him.
Tomorrow, Det White is scheduled to appear in the witness box and is expected to give direct evidence and undergo cross-examination for at least five days.
The module concerns Bernard Conlon's claim that in 1997 Det White asked him in Raphoe, Co Donegal, to be found drinking after hours on the premises of Frankie's nightclub, owned by the McBrearty family.
He was to be a State witness against the McBrearty family in the licensing case.
This, he alleged, was to set-up the McBreartys, who had been accused of being involved in the death of cattle dealer Richie Barron.
The tribunal has found the death was caused by a hit-and-run and had nothing to do with the McBrearty family.
Mr Conlon further claimed in his evidence that Det White told him to fabricate a story that two men called at his door and threatened him with a silver bullet if he gave evidence against the McBreartys. Mr Conlon falsely identified two members of the extended McBrearty family as being the two who threatened him. Both men, Mark McConnell and Michael Peoples, were arrested and later released.
The tribunal has already heard evidence from Mr Conlon and gardaí from the Co Donegal and Sligo divisions. As Mr Conlon lived in Sligo, gardaí there were also drawn into events.
Today three witnesses will appear in the witness box, including Mr Conlon, who will be recalled to clarify certain points.
Another recalled witness will be Chief Supt Austin McNally, a member of the Garda's Carty internal investigation team, which looked into allegations of corruption in Donegal.
After the completion of the "silver bullet" module, there will be a brief recess before a new module is scheduled to begin on October 10th.