Frank Collins was a former member of the GCPD who became a Private Investigator. A little more than two months before the events of the murder of Thomas and Martha Wayne, he was tasked by the former to investigate a break-in at the Wayne Manor, as Frank had been kept on a retainer by Thomas for the past 10 years to investigate personal assignments.

Frank was a pivotal character first introduced in the tie-in novel Gotham: Dawn of Darkness, and whose actions ultimately lead to the death of Thomas and Martha Wayne.