If you thought network executives have itchy trigger fingers for early cancellations now, it's actually a tradition as old as broadcast television itself.
Take, for example, The Cases of Eddie Drake.
Nine episodes of the series were filmed by CBS in 1949, but six of those nine never made it to air. Three years later, DuMont picked up the series and added four new episodes to complete the series. Incredibly, the research guide I've been using doesn't list Eddie Drake, assuming it was meant to be a primetime show.
Don Haggerty top-lined as Drake, who narrated each tale, a la Dragnet or, later on, Richard Diamond. Standard fare, really, but I think you're going to see why CBS gave up on it so quickly.......! Here's "Shoot The Works".
As you can see, they saved money on credits by having actress Patricia Morrison read off the cast at the end of the show. Who'dathunk?