There is not much information on this, I have been trying to find a book on the case.
In 1985 Edward Sherman strangled his five months pregnant wife, Ellen, He left her body in their bedroom, leaving the air conditioner on. Edward had been having affairs, and even made one mistress get an abortion, he also had one child, a daughter by another Mistress. Ellen too, was also made to get an abortion at least twice. Their 12 year old daughter, Jessica, was away at camp. Edward left to go on a boating trip and a one time lover of Ellen's found her nude body and called police, Ellen had been strangled with her own panties. Edward was convicted of his wife's murder in 1992 and sentenced to fifty years. Edward died in 1996 of a heart attack while still serving time.
As I said I could not find much information on this and came across it while reading Cracking Cases by Dr. Henry Lee. Author Luanne Rice's ex- husband was friends with Edward Sherman, she talks about this in a article she posted to Glamuor magazine.