Frank Maddox
Sleepwalker frank maddox
Portrayed By John Archer
Appearance "The Case of the Sleepwalker's Niece"
Affiliations Doris Cole
Series Perry Mason

Frank Maddox was a business partner of Peter Cole's. Together with Peter and Phillip Kimball, Maddox owned part of Cole Enterprises.

Maddox began seeing Peter's wife, Doris Cole, after the couple separated.