Harry Driscoll

Harry Driscoll was an LAPD agent working in the Robbery-Homocide department.

Before Trinity
Driscoll and Jack Bauer knew each other many years before Trinity.

Trinity
Driscoll called Jack after learning about his interest in the "Sweetzer Avenue case", and offered to show him a lead. Around 8:40pm they met, and Driscoll took Jack for a hot dog before taking him on to the lead.