To stay on the subject of Spy Smasher, watch below to see ALL the original serials. Watch William Witney and Marguerite Chapman well, SPY SMASH! It's classic serial action, adventure and romance from one of the most popular serials of the time. Note that the top video below won't let you watch it here but you can still watch it on YouTube. The bottom one is an edited movie from the serials so give that a go too if you want to.
Spy Smasher Episodes 1-4
Spy Smasher Episodes 5-8
Spy Smasher Episodes 9-12
The Spy Smasher Returns full series
Great stuff from the the past,