A non-fiction thriller by the author of "The Boston Strangler" two young radicals assassinate a high government official. Were they patriots or murderers? Cairo, Egypt: The car moved slowly through the baking heat and noise of the city and finally arrived at Lord Moyne's residence. The car halted and the chauffeur hurried to open the door for the British Ambassador. On the other side, two figures leapt up and raced toward the car-both carrying revolvers. One youth reached the automobile, wrenched open the back door and fired three times at Lord Moyne. "Stop, murderers, stop!" Within seconds police had captured the two. "Who are you? Why have you done this?" One boy spoke. "We have nothing to say. We await the judgment of mankind."