Clark and Lex are mystified when the Luthor mansion is robbed by burglars who seem to have the ability to walk through walls. Lex's curiosity becomes desperation when he discovers that the thieves have stolen evidence of his secret project. Clark wonders if his father's suspicions that Lex is deceitful have been correct.
Three boys find the Dead Man's Gun and after their own mis-adventures with it, fall in with Frank Santee, a bank robber and murderer. But the next night, when the bank robbery turns violent, the boys kill Santee and are declared heroes.