THE BOYS FROM BRAZIL by IRA LEVIN 312 pages. Random House. $8.95.
Who can forget the grainy documentary film sequence that shows Dr. Josef Mengele greeting new arrivals at Auschwitz? Handsome as a matinee idol in his uniform, he blithely chooses the men, women and children for genetic experiments. Those not gently nudged aside by his baton go more quickly to their deaths in the gas chamber.
The "angel of extermination," as Anne Frank called Mengele in her diary, was not arrested after the war. He lived openly in Bavaria until 1951, when pressure to bring him to justice forced...