This is the fourth and concluding volume in Steele's The Return of Ul Quorn saga, following Captain Future in Love, The Guns of Pluto, and 1,500 Light Years From Home. It's a sequel to Steele's first Captain Future novel, Avengers of the Moon, which appeared from Tor Books some years back. These books are a re-boot/re-imagining of the popular character created by Leo Margulies and Mort Weisinger in 1939 who starred in his own magazine from 1940-1944, and then occasionally in the pages of Startling Stories magazine from 1945-1951. All but three of the pulp adventures were written by Edmond Hamilton. Captain Future was Curt Newton, space-traveling adventurer and scientific genius, who's aided by an android named Otho, a robot named Grag, his brain-in-a-box mentor, Prof. Simon Wright, and occasional members of the government and Planetary Police, most notably his girl friend Joan Randall. Hamilton made some silly assumptions in his stories, and Steele has re-framed the series in a scientifically plausible way without losing the pulp flair and flavor. As this one opens, Ul Quorn, the evil criminal genius who murdered Curt's parents, had escaped from his prison on Pluto, stolen control of an incomparable interstellar weapon, and brain-washed Curt into attempting to assassinate President Carthew. Through a series of ingenious bits of misdirection, scientific acumen, and bravery, Curt tracks Ul Quorn to his lair near Jupiter for a final, fatal showdown... It's a grand old pulp story, and I found it to be lots of fun. There were a couple of points that gave me pause (a disco ball? really?), and several typography problems detracted from the overall experience, but it was still a fine read. There are several interior illustrations that are pretty good, but I thought the cover was below par. Steele has appended a long essay detailing the history of the space opera genre and offering significant amounts of commentary, with which I mostly agreed. Just when I was thinking that they don't write 'em like that anymore...