After centuries of failure man has finally found a gateway to the stars. The search for intelligent life once again gripped the scientific community. Unfortunately in their relentless persuit to achieve that goal, precautions were not taken. They neglected to realize the possibility of intelligent life finding them first, and it did. A spacecraft of alien origin slipped through the doorway, studied the system for a short time and fled quickly. Colonel Trent Collin, Earth's top agent, followed the intruders trail only to end up on a world barely into the industrial age. While he was busy...

After centuries of failure man has finally found a gateway to the stars. The search for intelligent life once again gripped the scientific community. Unfortunately in their relentless persuit to achieve that goal, precautions were not taken. They neglected to realize the possibility of intelligent life finding them first, and it did. A spacecraft of alien origin slipped through the doorway, studied the system for a short time and fled quickly. Colonel Trent Collin, Earth's top agent, followed the intruders trail only to end up on a world barely into the industrial age. While he was busy...