Kenneth Bulmer 
Key to Venudine [EPUB ebook] 
Keys to the Dimensions Book 3

Rodro’s men were pushing past, were blundering with reeking weapons into the room to kill and take the princess away. Lai half stretched up from the princess’s restraining arms. The room was empty of other life apart from Sir Fezius and the two knights now lifting their swords, ready to cut down Lai. A popping noise sounded like a drum bursting. A man appeared in the middle of the room. One moment he was not there; the next he stood there, holding a bulky stick in his arm, peering about with a white face. He said something that sounded like "Skeet." The next instant the room resounded with an avalanche roar and a hellfire blast of scorching flame.