An undated mug shot shows Wyndham Lathem. (Chicago Police Department)

Monday marked the first day of Wyndham Lathem’s trial, which began more than four years after he and another man allegedly stabbed 26-year-old Trenton Cornell-Duranleau dozens of times.

Wyndham Lathem stands with his attorneys in Cook County Circuit Court on Sept. 28, 2017. (Courtroom sketch by Thomas Gianni)

A former Northwestern University professor is set to stand trial in the stabbing death of his boyfriend as part of what prosecutors said was a sexual fantasy he shared with another man who was charged in the case.

Wyndham Lathem, left, and Andrew Warren (Chicago Police Department)

A judge has agreed to make public the details of a plea agreement reached this week between Cook County prosecutors and a former Oxford University staffer who says he’ll testify against an ex-Northwestern University professor at his upcoming murder trial.

Wyndham Lathem, left, and Andrew Warren (Chicago Police Department)

Andrew Warren to testify against former Northwestern professor

More than two years after a grizzly slaying that led authorities on a nationwide manhunt, a former Oxford University staffer has pleaded guilty to murder and agreed to testify against his co-defendant, a former Northwestern University associate professor.

Wyndham Lathem stands with his attorneys in Cook County Circuit Court on Sept. 28, 2017. (Courtroom sketch by Thomas Gianni)

Former Northwestern professor Wyndham Lathem and his accomplice Andrew Warren, charged in the stabbing death of a Chicago hairstylist, will have their hearings scheduled together as their cases proceed.

Wyndham Lathem stands with his attorneys in Cook County Circuit Court on Thursday. (Courtroom sketch by Thomas Gianni)

Two former university employees charged in the brutal stabbing death of a Chicago hairstylist earlier this summer have pleaded not guilty to a half-dozen murder charges levied against them.

(Chicago Police Department)

“Everything is unusual about this case until we hear more,” a Loyola University Chicago criminal justice professor said regarding Wyndham Lathem and Andrew Warren – two former university employees accused in the stabbing death of a Chicago hairstylist.

(Chicago Police Department)

Wyndham Lathem and Andrew Warren each face six counts of first-degree murder in the July stabbing death of a 26-year-old man inside Lathem’s River North home.