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The Shaddan Crown is the key to power -- and the Klingons have the advantage!

An Enterprise shuttle is forced to crash-land in a violent storm on the barren planet Sigma 1212. Spock, McCoy and Kailyn, the beautiful heir to the Shaddan throne, survive in the near disaster.

Pursued by primitive hunters and a band of Klingon scouts, they must reach the mountain where the fabulous dynastic crown is hidden. With the help of Spock and McCoy, and her own fantastic mental powers, Kailyn must prove that she alone is the true heir to the throne.

Should they fail, they will open the door for Klingon takeover of the whole quadrant -- and the galaxy's hope to live long and prosper will fall in the shadow of a cruel tyranny.

Freedom fighters in the Earth resistance movement face off against alien invaders in New York City.

The Earth has had another reprieve from alien domination. A daring desert resistance raid has reclaimed three key human prisoners -- marked for conversion or death aboard the Mother Ship -- from Commander Diana and her security chief, Lydia. The furious Diana blames Lydia, who plans a terrible vengeance; she will spin a diabolical web to snare Diana's power -- and trap her most hated enemies: Resistance heroes Mike Donovan and Ham Tyler. Meanwhile, the resistance has troubles of its own. Trusted friends may be collaborating with the alien enemy. Every smile may hide a secret, as the fate of every living soul in Los Angeles turns on the violent outcome of plot and counterplot, disguise and deception...

The Visitor's plot to bring about a new ice age through world-freezing technology while they bio-engineered bacteria that metabolizes heating oil into uselessness. The goal is to freeze humanity into submission in the cold areas where the Visitors can't survive because of the regenerative red dust. But when cases of a mysterious poisonous gas kills people in buildings that use heating oil begin showing up, a scientific research group discovers the fact that the oil has been tainted after studying collected samples from these locations. If it were not for the poison gas bi-product, they would not have discovered the cause, nor the Visitor plan to use the bacteria to wipe out the world's crude oil supply by injecting it directly into underground reserves. Travel with the resistance from New York through New England and overseas to the Middle East and the Persian Gulf, as American resistance members join forces with Israeli and Arab resistance fighters in an attempt to foil Diana's latest plan, with the help of an egotistical computer expert who may also be a double agent.