Sounds like you might be thinking of the movie “Double Jeopardy” with Ashley Judd & Tommy Lee Jones.
The husband in the movie got his wife drunk while they both were on their sailboat. When she awoke, he was gone. There was blood all over and her husband gone. He had staged what appeared to be a death scene, made it look like his wife had killed him and then disappeared, running off to another state with his gf. She was charged with murdering him and spent 7 yrs in jail.
(Google it to get more info about the story... & why it’s called “Double Jeopardy”)
I went through a very long & very expensive CT divorce, also. We were living in a town close to New Canaan. I had been married for 4 yrs to my 2nd husband, also the sole owner of his contracting business.
I discovered he too had a gf. Within a few days after I confronted him, I was served divorce papers. He said I had to move out of our house and when I refused to, he went to court, obtained a restraining order stating I had threatened to harm him and his 12 yr old son while they were sleeping. Which I didn’t! I was too afraid of him to even argue with him, much less threaten him.
I received the restraining order on a cold January day, during the worst snow storm that year. My attorney called me at work and said I could not go home that night!
I stayed at a friend’s and the next day my sister told me to get & watch the movie “Double Jeopardy”. She advised that I be extremely careful, stay totally away from my house and him, because she was sure my STBX would stage a scene that he was hurt and I caused it, hoping I’d go to jail.
After I was finally able to go home to get some things, I had to have a police escort and I had 15 min to gather some clothes, and as much else as I could get.
There was evidence in our bedroom and bathroom that his gf had been staying there!
My divorce took 2 yrs, then went to trial. I could go on and on about the fear I had, what all he did to me & my sons, our cars, his lies about how his company wasn’t making money, his hiding money, how the attorneys kept prolonging the divorce and kept billing me, etc etc etc.
I was told that he hired a few of his guys from his company to flatten my car tires, and my sons’ on several occasions. In the end, my divorce ended up costing me much more than I was awarded. It was the worst thing I’ve ever gone through.
Anyway, enough about my CT divorce. I meant to just comment about the movie “Double Jeopardy”, but got carried away.
Jennifer Dulos’ case is bringing back so many memories of my being so scared of my then STBX.
I’m just so glad I didn’t have kids with my ex and didn’t go thru a custody battle with him.
ETA: The most devastating thing was how he lied during the trial and charmed the lady judge, with his fake charisma.
But then I had to remind myself how he charmed me, too! And so many others. So typical of a narcissistic, sociopathic creep.