Boy, I forgot this topic ever existed. 
And yours is "Murder in a Small Town?"
I know me too lol
And it's "Murder in Small Town X", but I'll count it as correct.
Reality show
Contestants had to solve a murder
The winner sadly passed away in the 9/11 attacks.
The show followed 10 people trying to solve a fictitious murder, with the winner, Angel Juarbe Jr, sadly dying in the 9/11 attacks, just mere days after the finale of MiSTX aired with him winning.
And the answer to the last one
Reality Show
Had 3 different host in its 5 seasons.
One of the VERY few reality shows that voting didn't ellimanate someone.
Was "The Mole", for anyone that was still trying to figure it out.