Captain Flight Comics #8

In "Case of the Screaming Suicides," the Black Cobra and his younger brother, the Cobra Kid, take on a chilling mystery when a string of seemingly self-inflicted deaths rocks the city. With their father, District Attorney Hornsby, caught in the crossfire, the duo must unravel a killer's twisted scheme—where jewelry is the motive and every suicide hides a sinister truth.

When a mysterious blanket of deadly Trefite gas from Venus plunges Earth into unending darkness, Red Rocket pilots the Blue Bullet toward the planet's surface to stop the catastrophe—only to discover that his stowaway companion, Arlene Stenzel, has hidden aboard his ship. Together they must confront the sinister Black Satan of Doomsday and his alien forces in a desperate race to destroy the source of the suffocating vapor before it triggers a chain reaction that will annihilate all life on Earth.

A settlement worker named Kitty Kelly discovers her true calling when wealthy philanthropists begin succumbing to a mysterious madness that turns them violent—and she uncovers a sinister scheme at its heart. As Yankee Girl, she must battle her way through a plot involving a rogue doctor, a lunacy serum, and a twisted plot to steal the fortunes of the city's richest men. With hypnotic powers and fearless determination, she races to stop the mastermind before his grip on the city tightens.

In "null," undersea detective Torpedo Man [Don Wallace] teams up with his partner Roger to investigate the mysterious death of a diver linked to a real estate broker's ambitious quest for a legendary gold-laden shipwreck. With his jet-propulsion system, Torpedo Man dives deep into the unknown, uncovering a wreck that defies expectations—its treasure far greater than anyone imagined, even shocking the broker himself.