Fleet of Worlds (Known Space Series)

Larry Niven teams up with fellow science-fiction writer Edward M. Lerner to take a closer look at the events leading up to Niven's first Ringworld novel.

Kirsten Quinn-Kovacs is among the best and brightest of her people. She gratefully serves the gentle race that rescued her ancestors from a dying starship and nurtures them still. But, if only the Citizens knew where Kirsten's people came from!

A chain reaction of supernovae at the galaxy's core has unleashed a wave of lethal rad…