In 1949 The Dynamic Duo returned to theaters with a serial sequel in which they battled the hooded Wizard. This second 15-part story was also guilty of cost-cutting and logical errors. This serial wasn't quite as well receive as the initial one, though it too helped lay the groundwork for the zany Batman of the 1960's. Not only that, this serial introduced the Bat-Signal (which also happened to work in broad daylight...).
Mmmmmmm, more Batman cereal.
Up Next: Batman '66
Batman Serial * Batman and Robin Serial