As out of character as suicide seemed, Kari Baker's parents, Jim and Linda Dulin, said they had no choice but to believe it.
"We kept trying to convince ourselves," Linda said. "What other alternative was there? The idea that Matt could have taken her life was more horrible." But that's exactly what Linda's family thought.
"He killed her," Linda's younger sister, Nancy, said. "Kari loved her life. She loved her family. She would never have left those girls."
From the start, Nancy, as well as Linda's other two sisters, Kay and Jennifer, and niece Lindsey, tried to convince Linda that Kari's death needed to be investigated.
According to Nancy, Matt Baker's story about Kari's last day simply didn't match anyone else's. "He had said that that day Kari was sick."
But she didn't believe it. "People that saw her said she wasn't," said Nancy.
And Nancy said it doesn't make sense that a sick, tired Kari would ask Matt to put gas in the car and rent a movie.
And they certainly didn't believe that if Kari did commit suicide, that she would ever be found in the nude. Nothing seemed to make sense - not even the choice of the sleeping aid Unisom. According to Linda, "She actually took a generic brand."
They also said that Kari's unhappiness in the last weeks of her life wasn't about Kassidy. According to her former grief counselor, Kari was worried about herself.
"And she said, 'I saw Kari in therapy ... And she was afraid that her husband was having an affair and afraid that he was trying to kill her,'" said Kay.
That was just three days before Kari died.
And there's more: Linda's sisters began sharing secrets they'd kept from her all these years.
"I didn't realize that no one in the family liked him," said Linda.
They told Linda about Baker's odd and even boorish behavior.
"He had come up behind my daughter and made some, just really inappropriate sexual comment to her," said Kay.
There were several unsettling incidents, like in 1996, when Kari lived with Baker in a complex. DeeAnn Avalos said the preacher tried to pick up her 16-year-old daughter.
"He asked, 'Have you ever been kissed by a boy?' She said, 'Yes,' and he just suddenly grabbed her and kissed her right on the lips," said Avalos.
At one church youth center, Baker was warned about his behavior with young women. He never seemed to stay long at any job.
"Every time he'd move from a job, I would think -- he did something to someone," said Nancy.
Lora Wilson met Matt Baker in 1991, when they were both student athletic trainers at Baylor University. According to Wilson, they were cleaning an empty locker room when he suddenly grabbed her.
"He lifts me up off the floor and he sits on one of the benches with me on his lap. And that's when he begins running his hand up my thigh and between my legs," she recalled.
Matt Baker denies ever touching Wilson. Instead, he says he inadvertently scared her that day, by turning out the lights. He also denied ever assaulting or harassing any of the women.
"I wanted Matt to be OK. I wanted him to be a good man," Linda Dulin said. "But it didn't add up. Nothing adds up."
Linda finally began to see Matt Baker through her sister's eyes. But persuading the local police to reopen the investigation into Kari's death was going to be far more difficult.
"They didn't do their job and they didn't take us serious," said Nancy. "And I don't think we were asking them to believe that Kari was murdered," Kay added. "We just wanted an investigation."
Police concluded that Kari committed suicide. Only a few photographs were taken at the scene, and the only evidence collected was the Unisom bottle, the remaining pills and the typed suicide note.
So the women began their own investigation. Calling themselves "Charlie's Angels", they began making phone calls, following every lead and retracing Baker's movements the night Kari died.
Their biggest discovery came unexpectedly, when Linda took a look at Matt and Kari's cell phone records. The records showed that 10 days after Kari died, someone began using her cell phone.
"Matt had given the phone to Vanessa Bulls," said Linda.
Matt Baker admits he often talked to Bulls, a young woman who attended his church.
But he says he wasn't interested in her. "I never thought of a relationship with her at all. That never was anything in the back of my mind."
But phone records showed almost 1,700 minutes of calls between Baker and Bulls in just 10 days.
"It looked like he got on the phone as soon as he took the girls to school and stayed on the phone with her most of the day. It was crazy," said Linda.
Matt Baker says he needed a friend. "I needed somebody to look me in the face and say, 'I'm sorry you lost your wife.'"
But the records show Baker began calling Bulls before Kari died. He denies he was having an affair. "There was never any relationship at all other than a friendship," he told Moriarty.
Vanessa Bulls told police they did begin dating, but only after Kari's death.
"This is a man who has a very dark, evil side... He was preying on other women," Linda said. "And then finally he found one who it looked like something might go somewhere with. And I believe Kari was in the way."
Armed with a possible motive, Linda hired Bill Johnston, a dogged former federal prosecutor, and his team of investigators.
"All of a sudden, all the shock I'd been feeling, all this numbness - it was just like it just washed right off of me. And I thought, 'OK, Linda, we're going to find out what's going on here.' And after that, we went into battle mode."