Rare was the case where Quinn Martin's production company came up with something other than a crime drama. In 1964, Martin partnered with 20th Century Fox to adapt the studio's 1949 film, "12 O'Clock High", into a weekly series that, as far as ABC was concerned, was meant to be a complement to the network-produced Combat!.
However, 12 O'Clock High lasted 2 1/2 seasons, signing off for good in January 1967. Part of the problem appeared to be a revolving door with the ensemble cast. Robert Lansing (ex-87th Precinct) was cast in the lead role of General Savage in the 1st season, but left after that initial season. Lansing would return in The Man Who Never Was during the 1966-7 season, but that ended up a casualty as well.
Paul Burke (ex-Naked City) appeared in 2 episodes, including the opener, in the first season before being brought back as a regular in seasons 2 & 3. While most of us will remember Chris Robinson, another 2nd season addition, for his later work on the daytime soap, General Hospital, he was part of the ensemble, getting wide exposure for the first time.
Here's the opener, "Golden Boy Had Nine Black Sheep":