The enigma of King Herod as a cruel bloodthirsty tyrant on the one hand, and a great builder on the other is discussed in a systematic modern historical and psychological study. It seeks to unravel the contradictory historic mystery of the man and his deeds. After A. Schalit's König Herodes, this study is a new comprehensive, pioneering study on the intriguing personality of Herod, also using the insights of psychology. Herod's mental state reached an acute level, consistent with the DSM-IV diagnosis for "Paranoid Personality Disorder". He grew up with an ambiguous identity and suffered from feelings of inferiority. Haunted by persecutory delusions, he executed almost any suspect of treason, including his wife and three sons. The Hebrew original text was Winner of the Ya'acov Bahat Prize for Non-Fiction Hebrew Literature for 2006.