Seeker From the Stars

It beagn merely as an investigatory mission - Chris Everman's assignment on Earth was to evaluate the planet's readiness for membership in the intergalactic peacekeeping forces of the Black Watch.But upon his arrival, Everman found himself being pursued by the Terran secret police, only to fall prey to the alien Zidon, a deadly, multi-tentacled creature.In a breathless chase from Earth to the secret slave colonies of Mars and Venus, Everman falls captive to his alien pursuer, only to discover that the fate of Earth's future depends on the ultimate victor in their life-and-death struggle.