โลกกำลังอยู่ในภาวะวิกฤต เมื่อแหล่งอาหารสำคัญจากอาณานิคมดาวอังคารถูกวางยาพิษจนเป็นเหตุให้ชาวโลกเสียชีวิต ทำให้สภาวิทยาศาสตร์ตัดสินใจส่งเดวิด สตาร์ สมาชิกอายุน้อยที่สุดของสภาฯ ไปยังดาวอังคารเพื่อทำภารกิจลับในการค้นหาความจริงเบื้องหลังเหตุร้าย และกระชากหน้ากากของคนร้ายออกมาให้ได้

Twenty-five years before, Lucky Starr's parents had been destroyed during a pirate raid on the Terrestrial Empire. Now Lucky was a man, and an officer of the Council of Science. His ship was heavily armed, the pirates were at hand, the time for sweet blaster vengeance was near!

From the distance it seemed an emerald green, fairyland bubble! Aphrodite, the largest city of Venus, deep under the planet's sea. There Earthmen had established an incredible civilization, but now it was threatened by some awesome force which preyed on men's minds.

From Wikipedia—Lucky Starr and the Big Sun of Mercury is the fourth novel in the Lucky Starr series, six juvenile science fiction novels by Isaac Asimov that originally appeared under the pseudonym Paul French. The novel was first published by Doubleday & Company in March 1956. Since 1972, reprints have included a foreword by Asimov explaining that advancing knowledge of conditions on Mercury have rendered some of the novel's descriptions of that world inaccurate. Cover artist Darrell K. Sweet

Sabotage!!! Agrav. It was the century's most important advance in space travel...and an experiment so revolutionary that only the men who huddled beneath the surface of Jupiter Nine were permitted to know its full meaning. Yet someone else did know—knew everything, saw everything, head everything—and was diabolically sabotaging the top-secret mission. Who or what the enemy was, Lucky Starr didn't know. but one thing was certain. The deadly force was not human...not even remotely human!

Earth officials were hard on the heels of the mysterious Sirian spy, Agent X, when he blasted off in a stolen spaceship. But before they could catch him, the master spy jettisoned the capsule that held his report into the icy rings of Saturn. In a flash, Lucky Starr and Bigman Jones found themselves in a race with the Sirian war fleet to recover it. When the Sirians couldn't find the capsule, they kidnapped Lucky and Bigman, bringing them to their secret military base on Titan. There the arrogant Sirian commander offered Lucky a terrible choice: turn traitor to Earth—or Bigman would die! It was not an idle threat.

Dehvid Starr ezche v detstve lishilsja roditelejj, stavshih zhertvami kosmicheskih piratov. On ucelel i poluchil luchshee obrazovanie v Galaktike, stav strojjnym krasavcem-sportsmenom so stal\`nymi myshcami i analiticheskim umom pervoklassnogo uchenogo. K tomu zhe Dehvid stal samym molodym chlenom Soveta Nauki, organizacii, obladajuzchejj neogranichennymi polnomochijami...