Scullin is set to appear before a Cuyahoga County judge Friday morning. He's being held in the Cuyahoga County Jail on a $1 million bond.
The Cuyahoga County Prosecutor's office said the case has yet to go before a Grand Jury.
Scullin and the victim's husband, Bruce Pleskovic, called 911 to report finding the Strongsville Middle School teacher unresponsive in her home on October 23. The Cuyahoga County Medical Examiner's Office said she suffered gunshot and stab wounds.
Scullin was set to marry the victim's daughter, with whom he shares a 1-year-old daughter. They all lived together in the home, where police responded several times for reports of suspicious activity over the last year.
According to police reports, Scullin was the only person to witness two attempted break-ins, in August and again four days before the murder.