The New Adventures of Huckleberry Finn (1968)

Strange Experiment (1x18)

Air date: Feb 09, 1969

Tom, Huck and Becky enter the house of a mad scientist Dr. Filostro who shrinks Huck. Tom and Becky escape their prison and get Huck to his normal size. In the chaos that follows, Filostro, Creech and a hideous monster all get shrunk.