National Comics #41 (1944)

In "Three Black Cats," the Vardoni Brothers—masked in sleek black suits with cat ears and mustaches—seek vengeance on circus owner Martin Brun for their brother’s death, unleashing a brutal assault with clawed gloves. Though Quicksilver arrives too late to save Brun, he manages to halt the brothers’ deadly rampage against Brun’s partners.

Sally O'Neil stumbles into a mysterious encounter with the enigmatic Raja Yashi, a man who claims to offer guidance through the "Magic Circle" for lonely souls. As she becomes entangled in a web of psychological manipulation and strange rituals, she begins to suspect that the Raja’s supernatural aura may be a cover for something far more dangerous.

In the shadow of a city gripped by a murder hunt, a reporter named Chic Carter tracks down Delia Ross, the sister of the fugitive Vern Ross, hoping to uncover the truth behind the sensational headlines. As he learns that Vern may be innocent and framed, the investigation takes a dangerous turn when the real killer—Big Bill Boylan—reveals his twisted plan to eliminate everyone involved.

In "null," the Unknown races against time to stop a Nazi train transporting prisoners to a concentration camp, using his wits and courage to free those aboard. With the train halted and its cargo liberated, he deliberately crashes the empty locomotive into the station, disrupting the enemy's plans.

In the midst of wartime tension, defense worker Gerry O'Neal is blackmailed into stealing a secret radio gun-sighter for Japanese spies, threatening the life of her beloved Corporal Joe Jordan. With her loyalty tested and her courage unshaken, she reaches out to U.S. Army Intelligence, setting off a daring rescue mission led by the undercover agent G-2.