A jury convicted the wife of a longtime Boston firefighter with his stabbing murder.

A Plymouth Superior Court jury deliberated for roughly two and a half hours Friday before convicting Christine Ricci, 49, of Marshfield, on charges of second-degree murder and assault and battery by means of a dangerous weapon — a knife — in the Jan. 28, 2021, murder of her husband, 51-year-old Michael Ricci, who was a Boston firefighter for 23 years.

Marshfield Police responded to the Ricci family home at 679 Moraine St. a little before 5 p.m. that day. First responders worked to stabilize Michael Ricci before he was transported to South Shore Hospital to be treated for stab wounds to his left chest and another to his left shoulder area. He was pronounced dead at around 5:30 p.m.

Prosecutor Shanan Buckingham, in her opening arguments at the start of the five-day trial, said that the couple had a verbal and physical argument ahead of Christine Ricci stabbing her husband to death and that this final altercation was “not the first time the defendant brought a knife to an argument.”

Buckingham, in her opening statement, said that Michael Ricci had an affair in the fall of 2018, which was “the major turning point.” The couple decided to “stay together and work on their family,” and that Michael Ricci was committed to doing “everything he could to make things right and keep his family together.”

“The defendant, on the other hand, continuously talked about and focused on infidelity for over two years,” Buckingham said, adding that the defendant beat, abused and attempted to “control” her husband during that time.

“This affair was like a pot of water simmering on a stove. And over the period of time between 2018 and January 2021, the defendant continued to turn up the heat on that pot by bringing up that affair over and over until that simmering pot of anger, jealousy and control boiled over on Jan. 28, 2021.”

A representative for Boston Firefighters Local 718 IAFF told the Herald the union had no comment on the tragedy “out of respect for the family.”

Judge Diane Freniere scheduled sentencing for Aug. 22.