Kinsman #1 & 2: The kinsman saga by Ben Bova

Hero or Killer?
In a startling future that’s coming closer every year, Chet Kinsman is an astronaut ace who has done everything in space—including committing the first murder. It’s a secret he can never escape, not even on the Moon, where he’s head of the first U.S. lunar colony.But suddenly, a series of shocking yet strangely inevitable circumstances forces Kinsman to confront his hidden past and decide Earth’s destiny. In a desperate countdown to nuclear annihilation, Kinsman struggles against a deadly paradox: if he rescues the world, he may end up destroying himself.Author Biography:
Ben Bova has been a presence in science fiction for more than four decades. He is a past president of the Science Fiction Writers of America and the former editor of Analog. The recipient of the Hugo and other awards, he has written dozens of novels, including Mars, Voyagers, and Death Dream-as well as Moonrise and Moonwar, the firsts two books of his acclaimed Moonbase Saga. He lives in Florida with his wife, Barbara Bova.