Anastasi suspected her husband may have had a hand in the child's death. But when the medical examiner ruled that the baby had died from Sudden Infant Death Syndrome, she put her suspicions aside and decided to stay with Wilson.
The marriage, which lasted seven years, wasn't easy. In 1993, Anastasi discovered that her husband had secretly filed for divorce. But incredibly, Wilson told her that he regretted having divorced her, and wanted to give their relationship a second chance.
A year later, she agreed to join him in Texas, where he had found a high-paying job. But just weeks before her move, Anastasi received a shocking phone call that made her realize that her life with Wilson had been a sham -- and that her husband was capable of anything.
"She truly thought she was moving to Texas. I wanted to call and say ‘It’s time to move on,’" says Vicky Wampler, Wilson's fourth wife.
Earlier that year, Wilson had married Wampler, and they had settled into a comfortable life just outside Dallas with their then 10-month-old daughter, Marysa.
Anastasi was devastated. It was then she realized that Wilson was capable of anything.
Garrett Michael, her baby boy with Wilson, had died seven years earlier of what doctors said was Sudden Infant Death Syndrome. But now, she wasn't sure that was what really happened.
"I saw it repeated in my head, the baby's death," she remembers. "He did it, he's responsible. This man is as horrible as I suspected then."
When Wilson called her to explain his new marriage, she accused him of murdering their son.
"I said, ‘Garrett, now that I see what you’re capable of doing to me, I know you killed my baby.’ And he said, ‘Missy, you’d be dead if you were here.’"
Anastasi went to the police and told them of her suspicions. Although the case was very cold, she was determined to push it forward. She spent the next four years, writing hundreds of letters to countless officials, asking for help.
"If Garrett Wilson had never left Missy, this never would have come forward before, because she had - lock, stock, and barrel - believed in him," says prosecutor Doug Gansler, who led the case against Wilson.
Details of that case are in "While Innocents Slept," a true-crime book by writer Adrian Havill.
Anastasi even warned Wampler to protect her daughter.
"He’s just not capable of hurting a child," says Wampler, who believes that Anastasi was motivated to warn her, not for justice, but for vengeance.
"This type of relationship had gone on for years. He moved, and she followed pursuit. When she realized that he wasn’t coming back to her, I think that she became obsessed with his destruction."
Liz Bahlmann, another woman with whom Wilson had a relationship, agrees.
"She [Anastasi] would go to the ends of the earth and spend her entire life until she destroys him," says Bahlmann, She first encountered Anastasi in 1985, before Wilson was married to her.
That summer, Anastasi caught Bahlmann and Wilson on a date at a Delaware beach. Both women discovered that Wilson had also been dating them at the same time. Anastasi was enraged, Bahlmann says, and hit Wilson with her sandals.
Wilson and Bahlmann left the beach in separate cars. But Bahlmann says Anastasi chased them in her car. "It was very frightening," she says, claiming that she went off onto the shoulder several times.
Anastasi denies this: "I'm not violent."
That day, Wilson told Bahlmann that he had intended to end their relationship and be with Anastasi. But by the end of the day, she says he changed his mind.
A few months later, he proposed to Bahlmann. But shortly after their wedding invitations went out, Bahlmann discovered that he had already married Anastasi.
"It was devastating, it was painful," says Bahlmann, who in her last conversation with Wilson told him that she wanted the $3,000 she had lent him. Wilson paid off the money soon after his son died.
How did Wilson cast his spell over so many women? He was charismatic and caring, says Bahlmann: "He treated you like a queen, like you were the only person on earth that mattered."
And to this day, Bahlmann insists that Wilson is not capable of murder.
"Garrett Wilson is a con artist. He is motivated by greed, and the vehicle to get his greed is women," says Gansler. "He would certainly prey on a particular type of woman - a needy woman, someone who would be sort of taken in by him."
But years of investigation led police to believe otherwise. Can the police gather enough evidence? Find out.
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