|Comic Story (10 pages)
||The Master Cracksman Bank Robberies
||When two of his classmates are arrested for participating in a wave of bank robberies, Johnny suspects their chemistry teacher, Professor Battenburg. Johnny investigates and becomes the Green Mask, discovering that Battenburg's compound "Brainol" is used to drug the students who are then used as fall guys for the real robbers. The Green Mask exposes Battenburg as the Master Cracksman, a criminal thought to be dead. Battenburg commits suicide after confessing.