That's because the prosecution and defense came to an informal "gentlemen's agreement" to keep certain information that might impugn the character of both Anthony and Metcalf out of the trial, the Dallas Morning News reported last month. Some of the details of the agreement have been coming to light in court this week.

Karmelo Anthony had planned to testify during his Texas murder trial over a track meet stabbing but backed out amid sudden concerns that prosecutors would raise potentially damaging evidence about the teenager's past,

Find out more about the allegations Karmelo Anthony had been stalking his girlfriend as well as reports of bullying and racism connected to Austin Metcalf.

The confrontation began when Metcalf asked Anthony to move from beneath a tent reserved for the track team; witnesses say Anthony warned, “Touch me and see what happens,” before stabbing Metcalf in the chest when Metcalf tried to move him.

Some information was kept out of Karmelo Anthony's murder trial because of an agreement between prosecutors and his defense attorney.

Karmelo Anthony’s ex-girlfriend claimed he was stalking her and sent a threatening text hours before he stabbed Austin Metcalf in Frisco, Texas, prosecutors claimed.

Retired judge Michael Chitty is overseeing the hearing, which will determine whether the Frisco teen gets a new trial.

Karmelo Anthony's new trial motion faces a Monday deadline as retired Judge Michael Chitty must decide whether to overturn the murder conviction.