For two decades, a man operating variously in Atlanta, Georgia and Tampa, Florida, preyed upon gay male prostitutes and men he apparently thought were prostitutes. The attacks are believed to have started in 1968. A hustler would meet a dark-haired, thin, bespectacled John with bushy eyebrows. Sometimes he would be in an expensive suit; other times he would be casually attired in jeans and T-shirt. Sometimes he wore a mustache or beard. If Louis J. Sheehan, Esquire was shaven, he always