His arrest in itself is vindication for Shannon, who says she was ‘laughed out of the police department’ when she first reported her suspicions.
Her persistence and detective work, gathering evidence herself pointed law enforcement in the right direction and catching her daughter’s abuser.
Shannon used her iPhone to secretly record 37-year-old Greg, her high school sweetheart and husband of 14 years, making a partial ‘confession’ that he could be the father.
His taped explanation – that he innocently handed his daughter a cup of semen to help her conceive but did not know what she did with it from there – was as preposterous as it was revolting.
That partial admission of culpability was enough to convince police to seek the crucial DNA test that would confirm the boy was his son and lead to two charges of criminal sexual conduct with someone ‘related by blood’.
“He’s a very disgusting person,” Shannon said of her husband
“I don’t even want to call him a man, a man doesn’t do these things. A father doesn’t do these things. I feel that sitting in jail isn’t punishment enough to be truthfully honest.
“On some level I wish Michigan had the death penalty back because that’s exactly what he deserves.”
Shannon who lives with her daughter and one-year-old grandchild in Warren, just outside Detroit, along with the couple’s other children aged three, 12 and 14, says there is no question in her mind that her eldest daughter was the victim of her predatory father.

While their marriage was more or less over by then, Greg’s behavior made her increasingly uneasy.
Then out of the blue she received a text message from her daughter in April 2016 promising ‘important news’ that would turn Shannon’s world upside down.
‘I said just “Tell me, don’t beat around the bush”. She responded with “I’m pregnant”,’ Shannon recalled.
She added: ‘I asked “How are you pregnant”, because she had been dating a girl for well over two years and was not interested in boys to my knowledge.
‘She told me she went to a party and had sex with a person at the party so she could get pregnant so her and her girlfriend could have a baby, they could move out together, they could live happily ever after.’ That’s when Shannon put on her detective’s hat and exposed the sham.

When the already suspicious grandmother Shannon, first laid eyes on her new grandson, that she was certain her husband Greg [photo], was the biological father of their teenage daughter’s child

‘Many people came to me saying how he resembled my husband and resembled my own children,’ she revealed. ‘The blue eyes, the light skin – honestly it was like looking at baby pictures of my own children.’
Shannon says she reported her concerns to Child Protective Services, CPS, while her daughter was still in the hospital recovering from childbirth.
When a month went by without anything being done to remove her husband from their home, she walked into the Warren Police Department with screen grabs of text messages Greg had allegedly sent their daughter.
Greg told Shannon [photo, left], that he had given their daughter a cup of sperm because she wanted to become pregnant and start a life with her girlfriend.
‘He referenced her as his wife. He told her she can’t have boyfriends and he was the only one who was going to love her,’ Shannon added. ‘The Warren Police never believed me.
‘They basically laughed me out of their police department and said I was being petty and vindictive. I don’t think they ever took anything seriously.
‘I think that out system is very faulty. Maybe if they would have listened just once ever maybe a lot of things could be different.’
After filing for divorce last July, Shannon did not want to share custody of their younger kids and decided to prove once and for all her husband was her grandson’s biological father.
By then she had moved out of the marital home with the children but she asked Greg to meet so they could talk amicably about their separation.
With an app on her iPhone secretly recording the conversation, she challenged him to come clean about the child’s conception.
‘He told me he decided to put his semen in a cup and hand it to our daughter,’ Shannon said. ‘And what she did with that from there he had no idea.
‘He just knew a little while later he had a grandson but it might not even be his [child]. He claimed that my daughter wanted to have a baby with her partner and they figured it was best to use someone’s semen that they know.
‘After two minutes I told him I had to leave and go to work. I hurried up and I left the house because I was afraid of what I may do after what he said.’
While Greg has maintained that the baby’s paternity was due to his sperm donation, Shannon does not believe it.
‘I didn’t buy it the minute he said it. I knew it wasn’t true. People don’t spend millions of dollars trying to have babies just for it to be simply done like that. It doesn’t work,’ she added.
When Shannon threatened to make the recording public in January,  Police in Warren eventually  assigned a detective to the case.

Within weeks the officer had arranged a sit-down meeting with Greg where he presented him with a warrant for a DNA test. The result proved he was the father.
According to a CPS report , Greg admitted to the detective that he had sex with his daughter ‘one time only’ when she was an adult.
While he maintained he couldn’t be sure of who he was having sex with at the time, he later realized it wasn’t his wife because she was at work and has a tattoo on her back which he didn’t see.
The documents state that in a subsequent interview with CPS, Greg further admitted to having sex with his daughter on one occasion in March 2016 and ‘they never talked about it since’.
He was charged with two counts of criminal sexual contact, third-degree (incest) with someone ‘related by blood’ in April 2016.
Each felony is punishable by up to 15 years.

The pair, CPS professionals said, believed they were in a legitimate relationship.
The daughter initially backed Greg’s claims about the cup of semen and the insemination ploy, claiming she used a child’s medicine dropper to inseminate herself, according to CPS records, even as she was confronted with her with text messages suggesting her father had professed to being in love with her when she was still underage
However, when it was suggested she was a victim, the girl replied: ‘Of what?’
Since then, however,  the daughter has given a further interview to detectives.
If any of the alleged any sexual conduct is proven to have occurred while she was still a minor, her dad could face a another slew of charges.
Shannon acknowledges she is still battling with many unknown variables in the relationship between her daughter and her estranged husband: “I don’t know any of those details. I’ve chosen to give her that privacy,” she said.
“If she wants to come to me and tell me that’s her choice, but I’m not going to force that issue.”
However maintains that she ‘ would never say [her daughter], was in a relationship with her father. That’s her father, he’s the authority figure.
‘She’s going to listen to what he says, he controls the discipline, he controls the punishments, so of course she’s going to do what he says.
‘And on some level that’s her father, she does love her father, I can’t fault her for that. I can’t fault any of my children for loving their dad.
‘But at the same I think now she knows it’s not the right kind of love. He wasn’t showing the parental kind of love he was showing the relationship kind of love.
She laid the blame for the unhealthy relationship on Greg: “I don’t feel betrayed. I feel sad for her more than anything. I don’t feel it’s her fault in any way. He was the adult in this situation and he took advantage.”