SPOILERS! so i just finished the lab scene, i dont even for a moment believe that daves friends are capable of this. if dave trusts dean, then hes already off the list. as for the others, no offense, seem like complete idiots. this kill was done by someone who knows what hes doing. my first assumption was either tyson or sal, but tyson isnt a killer, i can tell. as for sal, hes harmless. he wouldnt hurt a fly and not feel guilty about it. theres an unseen enemy here. for now all i can do is wait for someone to drop dead, which i dont want, because id like to win. part of winning is making sure i kill the bad guy before he kills any of them