The War Against the Rull — A.E. Van Vogt

When A.E. van Vogt wove several of his classic stories of The Rull into a novel, he created a work of enduring popularity in the science fiction field. Now back in print for the first time in the 1990s, this Tor edition includes "The First Rull," a story that postdates the novel and makes this book the first complete edition of the saga of the war between humanity and the alien shapechangers.