An A.B. correspondent has drawn on, summarized and synthesized most of the speculations, findings and commentaries on the late Dag Hammarskjold's ""mysterious"" death, and while it remains as much of a mystery as ever, it also provides an opportunity to review his life and sketch a personal portrait of the gentle, firm visionary who was also an ""erudite "". Nor does Gavshon neglect the entire political background to this ""mission of peace that was to become a rendezvous with death"", the financial as well as national and international implications in the Congo. He offers three possible explanations of the fatal crash,- pure accident, sabotage, or (less acceptably?) ""of his own making"" -- the outcome of his own ""inner despair and shattered hope"". And there are still many unreconciled physical circumstances to be resolved: had the Secretary General, according to the last words of the only survivor, changed the landing plan? Were the bullets in the bodies of some survivors significant? Why, when such careful protective security measures were ordered before the take-off (Hammarskjold was ""obsessive"" in his concern for secrecy) was the plane left unguarded for 4 hours before the flight? etc., etc. Gavshon ends with a request for ""a total investigation of all the circumstances"" behind this fateful mission nor does he neglect any of the graver implications in the disaster. It seems like a careful, competent review of the known evidence.