Those who knew Houston's 'Candy Man' Dean Corll all described him the same way - well-mannered, considerate, quiet, neatly groomed, and cheerful. He could usually be found in one of the more affluent communities within Houston, entertaining young boys at a small candy factory owned by his mother - the boys would pop in to watch as the pieces of candy came off the assembly line, and they all got along well with Dean.But some boys saw a completely different side of the Candy Man.From December 13, 1970 to July 25, 1973, 28 boys between the ages of 13 and 20 vanished from a neighbourhood just west of downtown Houston. The young men had all been tortured, then killed, by Dean Corll - who was, at that time, America's most prolific serial killer.