Book excerpt: In the summer of 1985, in his exclusive Upper East Side Manhattan apartment, Robert Bierenbaum, a prominent surgeon and certified genius, strangled his wife Gail to death. He then drove her body to an airstrip in Caldwell, N.J., and dumped it into the Atlantic Ocean from a single-engine private plane. The next day he reported her missing. Gail's parents had been thrilled to learn she was marrying Robert Bierenbaum. He seemed to be the perfect match for their daughter. he was from a well-to-do family, a medical student who spoke five languages fluently, a skier, and he even flew an airplane. But Gail would come to learn of her husband's dark side. On one occasion when Robert had tried to choke Gail because he caught her smoking, she filed a police report. She also alleged that he tried to kill her cat because he was jealous of it. For year, her sister pleaded with Gail to run for her life. Even her therapist warned his vulnerable patient that she could eventually die at the hands of the man she married. Fifteen years after this unspeakable, unfathomable crime, a jury found Robert Bierenbaum guilty of murder--and stripped the mask off of this privileged professional to reveal a monster.