The Man Who Stopped the Moon

The Plot to Melt the North Pole

The Attack on the Pentagon

The Trouble at Fort Knox

The Bomb That Wouldn't Stand Still

The Ships That Sailed to Nowhere

The Animal That Ate Oxygen

The Five Steps to the Kremlin

The Scheme to Flood America

A Strange Visitor to Colorado

The Man Who Kidnapped Himself

The Mine Below Thunder Bay

The Man With the Burning Ice

Stranger From Outer Space

The Terror of Point Boryak

The Plot Against Doctor Yoshida

The Merchants of Death

The Wall of Silence

The Case of the Million Dollar Ransom

The Man Who Couldn't Exist

The Hunter of the Haunted Castle

The Mystery of the Cinco Caverns

Death in the Windmill

The Fugitives From Galaxy 29

The Eye That Watched the World

The Midnight Raiders