Although movie studios continued to produce serial films, by the 1950s, television was beginning to draw viewers away from movie theaters.  To save money, some theaters (such as the Republic in our story) chose to show older serials produced in the 1930s, rather than the more expensive, newer ones offered by distributors.  Like serials, newsreels were also eventually killed by television.  And then finally, studios stopped producing cartoon shorts for theaters as well, as they shifted to either feature-length animated films, or cartoons produced specifically for television.  The Saturday matinee was never the same again.