Internal Affairs

Internal Affairs is a division of law enforcement that investigates the lawbreaking of professional officers on the force.

Day 6
During the events of Day 6, Jack Bauer went beyond the limits during his interrogation of Graem Bauer, his own brother. Graem later had a seizure and died as a result of an overdose of Hyoscine-pentothol. Buchanan wanted to make changes to the report, in order to avoid an Internal Affairs investigation. Jack was against this, as he wanted to face the consquences. Later it was learned that Phillip Bauer, the father of Jack and Graem, killed his own son in order to keep quiet about his involvement with Darren McCarthy and Dmitri Gredenko.