Sam Austin's dream of colonizing a distant planet seems to have come true. It's the twenty-second century, and Citadel, an earthlike planet located light years from the original home of humanity, is thriving. The colony has survived an alien invasion, and Austin hopes to move forward with peaceful intergalactic trade.

Back on Earth, US president Courtney Harrington is losing ground in the polls. In a ploy to improve public opinion, she makes false claims against Austin and Citadel. Harrington convinces the international community that Citadel has the technology-and the intent-to invade Earth.

So begins a fight between the old and new guards that could ignite war between the two planets. Austin turns to his friends on Mars for help as his ships are captured by the National Security Authority. Harrington will stop at nothing to reach her ends, even if it means assassinating Austin and sacrificing the lives of millions of her own people.

Through it all, the threat of alien invasion remains real. Austin and his compatriots will need both military strength and diplomatic prowess to avoid a catastrophic conflict between Citadel and its mother planet.

Target Citadel is the anticipated sequel to Destination Citadel, the first installment of Robert Adrian's Sam Austin Chronicles.