The Annals of the Heechee
Advanced Heechee technology had enabled Robinette Broadhead to live after death as a machine-stored personality, enjoying his life by flitting along the wires from party to party with a host of other machine-people.
But suddenly his decadent existence ends when an all powerful alien race intent on the utter destruction of all intelligent life reappears after eons of silence, and threatens the lives of all heechee and humans.
Even Robin, virtually immortal and with unlimited access to millennia of accumulated data, cannot discover how to stop these aliens. It began to seem that only a face to face meeting could determine the future of the entire universe.
Frederik Pohl
Frederik George Pohl, Jr. (1919-2013) was an American science fiction writer, editor and fan, with a career spanning over seventy years. From about 1959 until 1969, Pohl edited Galaxy magazine and its sister magazine If, winning the Hugo for if three years in a row. His writing also won him three Hugos and multiple Nebula Awards. He became a Nebula Grand Master in 1993.
Frederik Pohl used these pseudonyms: Edson McCann, Jordan Park, Elton V. Andrews, Paul Fleur, Lee Gregor, Warren F. Howard, Scott Mariner, Ernst Mason, James McCreigh, Dirk Wilson, Donald Stacy and James MacCreigh.
Heechee Saga
Heechee Saga consists of five primary books, and includes one additional book that complement the series but is not considered mandatory reads. The current recommended reading order for the series is provided below.