Toni Hartzong

Bob and Susie got married a year later and settled into their new life together.

Yet even living with his new wife, Bob kept a shrine to Tony's memory in his den.

And he has a trunk full of memories in the living room.

My wife was cremated.

She is in here.

And one day, my children, when I die, will take a moment and they'll put my remains where her remains go.

Tony's unsolved murder continues to be a part of Bob's new life with Susie.

But while Bob and Susie were still wondering who killed Tony six years after her death, Palm Beach County cold case detectives had found new evidence.

DNA in the right palm and his blood under her thumb.

And they were closing in.

John Van Houten has spent years tracking deer through the Georgia woods.

But he finds most of his prey in the urban setting of Palm Beach County, Florida, as a detective in the cold case squad.

The attack was so brutal on the victim, Tony Hartsong,

99% of them are domestic when the violence is so overwhelming.

In 2006, six years after Tony Hart Song's unsolved murder, the Cole case was reopened and landed on Van Houten's desk.

DNA testing in 2000 was not conclusive enough to charge anyone.

So Van Houten had all the samples from Tony's body retested using newer, more precise techniques.

And he made two striking discoveries.

A trace of Bob's blood was under Tony's left thumbnail and his DNA was on her right palm.

that's what convinced van houten's boss sergeant bill springer the cole case could now be solved when i reviewed this case and i looked at the physical evidence and i said this is a good case armed with the new forensic evidence police brought bob hartsong back in for another interview i don't think it's my blood i don't know why it matches me but i did not do it