O'Hara marked the first Mark VII show to run a full hour in length; all of Webb's previous efforts (excepting the TV-movie pilot for "Dragnet" 1967) ran in half-hour episodes. It was also one of the few he did not package for NBC. The show failed in the Nielsen ratings against ABC's "Partridge Family" and "Room 222" and ended after a one-season run. Reruns were later shown on the A&E Network in the 1990s.
AKA - O'Hara, U.S. Treasury: Operation Cobra
O'Hara, U.S. Treasury (1971) TV Movie
Cast: Charles McGraw, David Janssen, Gary Crosby, Lana Wood, Stacy Harris, William Conrad