OKAY. HERES WHAT WE KNOW (from my immediate rewatch when I am still emotionally in shock)
In the tunnels we had 6 people: Percy, Tessa, Kat, Elliot, Cliff, Cliffβs other cop guy. Tessa sent Mo out of the tunnels before it all started.
Tessa and Cliff are pointing guns at each other. Cop guy yells βput the gun downβ and Tessa points the gun at him before pointing it back at Cliff. It looks like maybe Kat takes a step forward to intervene, and thatβs when Elliot jumps in front. Tessa panics and pulls the trigger, and it hits Elliot π
Grayson and Tessa were in on a secondary plan for this final rum run (outside of the planned explosion to fake Tessaβs death). They get a final drop to make some more money, please Capone, and hey, if they get Cliff out of the way, all the better.
We see Grayson give Kat the gun and then Tessa immediately takes it from her. Grayson is upstairs at the party and doesnβt seem terribly shocked that there is an explosion coming from his tunnels. Is this a way for him to claim innocence in front of the movie exec that βI was no part of this bootlegging run, what a tragedy, I was at the party the whole timeβ?
At the time of explosion there are 4 people in the tunnels: Percy, Tessa, Cliff, Cop guy. We know from the promo that Kat and Elliot escape the tunnels. That leaves 4 bodies.
Of course, we know the plan was for Tessa to fake her death. Iβm assuming she gets out. Grayson could put out the story of 4 bodies even if there are only three. Whatβs to stop him from lying for his own gain and relationships.
Theyβre his tunnels, after all. He can put out the story in a way that maintains his innocence, and lets Coop go free. Who needs a fake explosion to fake her death when a real one will do just fine.