Key Out of Time is the fourth novel in The Time Traders series. Ashe Gordon and Ross Murdock, angry about the loss of their fellow agent Travis Fox on the planet Topaz, have travelled to the planet Hawaikan, a warm ocean planet, where they intend to set up a time gate. The world is so different from what they expected that they decide on a risky experiment: travel into the past of the planet, accompanied by two mutant dolphins and a female agent of Polynesian ancenstry.

In 1959 Andre Norton published "The Beast Master," a fast-paced science fiction adventure that introduced to readers a new kind of hero, Hosteen Storm. Storm, a Navajo from the American southwest, served in the Planetary Confederacy forces as a Beast Master teamed with an African eagle, a meercat, and a dune cat.
Telepathically linked to his team animals, Storm served valiantly in the war that eventually defeated the alien Xiks, though victory could not prevent the aliens from destroying Earth. With his homeworld gone, Storm emigrated to the colonized frontier planet Arzor, where he would have to help fight a holdout Xik force that has brought the war to his adopted home.
In "Lord of Thunder," Storm's beast master skills and animal partners are needed to unravel the mystery behind a huge gathering of the indigenous Norbies. Only Storm and his half-brother Logan Quade can penetrate the Norbies' clan secrets and discover what is behind the threat of an uprising that could destroy the tenuous peace between the colonists and the aliens who share their planet.
These two novels are science fiction adventure at its best. Here is exciting space opera full of colorful, absorbing SF action on an alien world, as only Andre Norton can write it.