Keys to the Dimensions Books in Order

Crane investigates disappearances linked to strange beings from another world. His search for the secret of the Map Country draws him toward an unexplored realm, where the mystery threatens more than the missing people he hopes to find.

Aviation journalist Robert Prestin meets a woman on a flight to Rome, then loses her somewhere in midair. Her disappearance draws him into other dimensions, strange powers, and a world where he may be the key.

Fezius helps two princesses flee a powerful ruler who wants to force one into marriage. Their escape draws him through portals to other worlds, where unfamiliar technology and competing powers complicate his effort to protect them.

Scobie Redfern thinks an unexpected visitor's talk of parallel worlds is a joke until pursuing monsters arrive. Fleeing through portals, he hopes the Wizards of Senchuria can help him survive and find his way back home.

The Contessa rules Irunium through force and needs a new engineer to keep her mines producing gems. A trapped Earth engineer becomes a target for recruitment into an operation whose valuable workers remain dangerously expendable.

Cy Yancey dreams of hunting in Africa but accidentally travels with fugitives through other dimensions. Stranded on Jundagai, where hunting governs life, he must search for a route back to Earth before becoming another victim.

Roy Tulley is kidnapped into another dimension where descendants of an Egyptian civilization fight with chariots. His knowledge of technology and a new attachment draw him into their struggles while he looks for a place in the unfamiliar world.

Returning from war, Harry Blakey discovers that a childhood memory of a room leading to another world is real. He joins a commando corps opposing interdimensional warfare and confronts the Diamond Contessa, whose monstrous armies have plundered other Earths.