Evidence #2 Tommy was accused of being the monster
Tommy did it
Evidence #3 When they said Steve was working on a radio to talk to aliens.
I'm just going to fix my...........radio
The theme in the "Monsters are due on Maple Street" is "Don't jump to conclusions." I say that because Charlie thought that Pete van horn was the monster that was causing the town to go bananas. Charlie wasted no time and pulled the trigger instead of questioning the black figure. Also most of the town accused Tommy as the monster just because of what he was saying. He just had comic book experience. He just described what his books say and pointed out the similarities from his books to what happened with the flashing light. The last piece of evidence is when the towns people said that Steve was working on a radio that was supposedly contacted with aliens. In reality it was just a plane old ham radio.