In Chapter 12 of Adventures of Captain Marvel (1941), the evil Scorpion has captured Billy Batson and taken him to his hideout, where he plans to use a machine called the Cyclotrode to destroy Captain Marvel once and for all. However, Billy manages to escape and transform into Captain Marvel just in time to stop the Cyclotrode from going off.
Captain Marvel confronts the Scorpion and a fight breaks out, during which the villain reveals his true identity as John Malcolm, a wealthy businessman who had been using the Scorpion persona to carry out his evil plans. Captain Marvel manages to subdue Malcolm and turns him over to the authorities.
As the chapter comes to a close, Betty and Whitey, who had been held captive by the Scorpion’s henchmen, are rescued by Billy’s friend, Malcolm’s secretary, who had also been working against him. The group is reunited and the adventure comes to a close, with Captain Marvel saving the day once again.