The tone in every one of the letters was the same. Despondency. Desperation. Seduction.

The officers carried away something else, too. A pair of black, army-style boots. They were the same boots I had glimpsed the night I had fallen outside Mass General, a knife edging toward my portal artery. The heel of the left boot was stained with blue paint that would turn out to match a crosswalk painted near the garage less than an hour before I was attacked.

The blood types Laura Mossberg had dug up for me supported my theory that Garret and Julia had been lovers and that he was the killer. Julia's blood type was B negative. The twins' blood type was O positive. Only a man with A positive or B positive blood could be the father. Billy was A negative. Garret was B positive.

I am certain Garret never realized what genetic testing would later prove conclusively-that Tess and Brooke Bishop were his daughters. But Julia knew it, and that ended her affair with him. She recoiled from him, but kept the children, children she had desperately wanted.

All Garret knew was that Julia had cut him off from her affections after she gave birth to the twins, that her maternal love for them somehow excluded her erotic love for him. Enraged, desperate to restore himself to his rightful place in her life, he became an elegant and opportunistic killer.

Brooke's murder was simple enough. Billy would be blamed. And when Garret overheard Julia and Darwin arguing about the nortriptyline, he used the cover of Billy's break-in to poison Tess, careful not to get his own fingerprints anywhere on the medicine bottle. He had probably already left the photographic negative of North and Julia where his father would find it, look at it, and touch it. Then. he had retrieved that negative and planted it for us to uncover.

Garret had even given his father an apparent motive- pathological jealousy, the desire for revenge on Julia for cheating with North Anderson. And he had concocted a little physical evidence to go along with it. But the main ingredient in the scheme came as a surprise, even to him. Once Darwin lost control and actually assaulted his wife- no doubt fueled by the double bind of her accusing him of murder, obtaining a restraining order against him, yet carrying on her own affair-he was ripe for the kill. All Garret had to do was offer up eyewitness testimony, then cry a little as daddy went bye-bye. For life.

One thing Garret probably hadn't expected was my falling for Julia, too. And that, he could not abide. That called for action. A knife in the back. He probably felt like I'd done it to him first.

EPILOGUE

Saturday, November 23, 2002

Lilly Cunningham's heroism was, ultimately, her willingness to face her emotional injuries-the pain of being seduced by her grandfather, the self-hatred and hatred of him that it had spawned. Until she could find the courage to do so, she literally reabsorbed her own potential destructive-ness, injecting it back into her body-dirtying, infecting, and disfiguring herself, but hurting no one else.

Julia Bishop had no such courage. She failed to confront the feelings of humiliation and worthlessness her father had provoked in her, hiding out behind her beautiful face and beguiling manner, feeding herself erotic conquests. Call it an addiction. Call it sexual sadism. Whatever its label, its effect was to pass on her destructiveness-to Garret.

In the courtroom, after being tried as an adult for murder and attempted murder, convicted and sentenced to life in prison, Garret asked for one thing. He wanted Julia to hug him. She did. Now she visits him three times a week at the Massachusetts Correctional Institute at Cedar Junction.

Julia has never visited Darwin Bishop, but I have. He was sentenced to nine years for Julia's attempted murder at Mass General. If you believe what he has to say (and I do), he really did think that Billy had killed Brooke. He really did want to bypass the criminal justice system and get him help at Payne Whitney.

Julia still lives with her mother on Martha's Vineyard. After her relationship with Garret was revealed, she voluntarily surrendered custody of Tess to the Department of Social Services. She was charged with no crime, though Anderson, O'Donnell, and I all believe she suspected Garret was the murderer all along, but kept that suspicion from the police, to keep her secret buried. Proving that she was an accessory after the fact, however, would be nearly impossible. No physical evidence linked her to any crime. And not even District Attorney Harrigan had the stomach for that kind of uphill battle.

As for Claire Buckley, she's been promoted to Darwin Bishop's fiancée. She's waiting for him, in a tidy little Trump Pare studio apartment-all that's left of Bishop's wealth. She swears he'll build a greater fortune than ever when he's released from prison. She may be right.

It took me three months and calling in a lot of chits, but I finally got Social Services to agree to let Billy crash with me in Chelsea. Permanently. I'm playing single parent now, and liking it, most of the time. The dead cat was, of course, a ruse of Garret's, but I don't have any expectations that Billy will be able to shed all his psychological scars. I do have hope for him, though. And I pray that will help give him enough confidence to walk into the future, instead of the past.

About Keith Ablow

Keith Ablow is a forensic psychiatrist who has served as an expert witness in legal cases involving violence and has evaluated and treated murderers, gang members, and sexual offenders for the

Commonwealth of Massachusetts. He is the author of several works of nonfiction and of the novels Denial, Projection, Compulsion, and Psychopath. Ablow lives in the Boston area.