When strong man Mr. Mammoth refuses to perform, his agent pulls in a favor with Commissioner Gordon to have Batman come and visit him. Mammoth explains to Batman that he's afraid to perform because he fears he will lose control. He explains to Batman how before entering Gotham City, his circus troupe made a pit stop and he was suddenly struck with the urge to go on a rampage, and had to force himself to stay submerged in a swimming pool until is passed. Batman promises Mammoth that he will find the cause of it before the show.