NASHVILLE, Tenn. -- Most of Nashville knows by now that Perry March have been convicted of conspiring behind bars to kill his former in-laws.

But the Channel 4 I-team has learned that a third person was present when March and Nathan Farris plotted to kill Lawrence and Carolyn Levine.

That third person was actually accused child rapist Jeremy Duffer.

Like a complicated chess game for prosecutors to win, the Perry March conspiracy trial required all the players had to be in place.

The trial showed who those players were, but the public did not know about one pawn, Duffer.

Channel 4 recently spoke with Duffer in the Metro jail. He would not discuss his pending case but did want to talk about March.

He, March and Nathan Farris were all on the same floor for inmates in protective custody.

Duffer was in a jail cell alone because he said he suffers from a condition that prevents him from eating around other people.

Then on Sept. 29, 2005, Duffer got a surprise cellmate named Nathan Farris.

According to jail records, two days after they became cellmates, both Duffer and Farris were moved to a cell right next to March.

March's main attorney remembers thinking before the conspiracy trial began that the movement of the inmates was odd.

"It raised some red flags and it created some suspicions," said March’s attorney, John Herbison.

The two cells share a vent in the wall and it was there that Duffer says he heard Farris say to March, "I could take care of the Levines for you."

Duffer, who said he became friends with March and even listened to his legal advice, might have never spoken publicly about what happened in that jail cell if it were not for what he said March told him after the conspiracy trial was over.

Duffer said March informed him the reason Farris was put in his cell in the first place was so Farris would beat up the accused child rapist.

Jail officials would then be forced to move Farris away conveniently into the cell next to March.

Duffer now wants to sue the jail, saying his safety was at risk so prosecutors could make their case.

"We don't operate like that. Our primary objective is the safety of the inmates and staff. Those type of accusations fly in the face of both of those objections," said Karla Crocker of the Davidson County Sheriff's Department. But Duffer said at first Farris would not play this game.

He did not harm Duffer, the accused child rapist said, so the jail had no choice but to move the two together.

That way, Farris would then be next to March and prosecutors would not only get their star witness, but also another witness who heard Farris talking, according to Duffer.

March's main attorney believes something different.

"One or the other, I can't remember which, was saying it was fortunate that Duffer had been moved because there were more things for them to discuss," said Herbison.

So, did prosecutors concoct this elaborate scheme to get Farris next to March, and possibly Duffer as a witness to it all?

Channel 4 was unable to reach any of the prosecutors who tried the March case for comment.

Duffer said he is coming forward now because he wants the public to know what jail officials are capable of doing.

He also wants a civil attorney to sue the jail. A spokeswoman for the jail said they did work with prosecutors on this case but denied the jail put anyone's safety in danger.