Paratime was one of H. Beam Piper's most inspired creations and this collection contains all three of Piper's Paratime Police novelettes featuring Lord Kalvan: "Gunpowder God", "Down Styphon!" and the never-before published "Hos-Hostigos". New stories include "The Alexander Affair", a story about what happens when an ambitious Paratimer decides to raise his con game to a new level and "The Sea of Grass", a new story about the infiltration of Kalvan's Time-Line by the Wizard Traders. Plus, the Kalvan yarns "Kalvan Kingmaker" and "Siege of Tarr-Hostigos" by John F. Carr and Roland Green. And, finally, "Paratime War": the story that answers the questions raised in Gunpowder God and Down Styphon! about why Verkan Vall, the Paratime Police and the Kalvan Study Teams suddenly vacated Kalvan's Time Line. In "Paratime War" the Home Time Line civilization faces its greatest threat since the Mystic Wars! Will 10,000 years of civilization come to an end due to the evil machinations of a madman? This is one collection that you do not want to miss.