Unfortunately, I'm here to announce that this story has been discontinued. However, I know how much it sucks when people abandon their stories and you never get to find out how it would end.
So I've decided to tell you what I had planned for this story.
As a quick refresher:
The M7 are all assassins living in Vegas. A Secret Person (who was obviously a rather crazy JD) was slitting throats and making it look like Ezra's group (Ezra, Josiah, and Nathan) did it. The rival group of assassins (Chris, Buck-in-a-wheelchair, and Vin) had teamed up with Ezra's group in order to catch him.
They also plan to assassinate Judge Travis (who has been a thorn in their sides for quite some time) in order to draw out JD.
And here's what would have happened next:
Judge Travis is a very well connected and crafty man. He's well aware that there's a hit out on his person. When the Six go after him things go horribly wrong and there's a shoot out. JD, who sees things going south, kidnaps the wheelchair-bound Buck in the confusion. Travis survives and begins a city-wide manhunt for the assassins. Chris takes full control of Ezra's team and they must survive the manhunt as well as find Buck.
Buck finds himself under the control of a very crazy young man. For the first several days he tries every way he can think of to escape, but he eventually starts to see something worth saving in JD. He coaxes the reasons why JD hates Ezra so much.
Back in Boston, JD was forced to work for the mafia as an assassin in order to pay his mother's hospital bills (she has cancer... curable cancer). Ezra, at that time, found himself at the mercy of a rival Mafioso. To pay his debt he took out a hit on JD. The hit went wrong and the apartment JD and his mother were living in exploded, killing her instantly. JD survived (though everyone thinks he died) and he wants revenge for what happened. He already slit the throats of the mafia responsible, and now he has come for Ezra.
Buck slowly gets through to JD... and JD lets him go, wanting to make amends by killing Travis. It's a trap and Buck convinces the others to come to his rescue. Travis agrees to stop the manhunt (at gunpoint) and they let him live. They take JD into their custody and at the end of the story they are slowly rehabilitating him back into sanity (and into the sweet young man we all know and love).