Wealthy Peninsula sportsman Tom Keen started his morning on Feb. 2, 1952 by giving some duck eggs to a friend. Then he kissed his wife goodbye and got into his Cadillac.

Moments later, when he turned the key in the ignition, a fiery ball of flames consumed the garage of Keen's prestigious 16-room San Mateo home. The 56-year-old man was dead from a suspected car-bombing mafia hit that remains a mystery.