I had been so nervous, Gregg tells EW of directing the episode.

This season, S.H.I.E.L.D.

Their arrival was actually a foreseen prophecy, which has caused more harm than good.

SAMUEL ROUKIN, DOMINIC RAINS, PATRICK FABIAN, IAIN DE CAESTECKER, CLARK GREGG (DIRECTOR)

Credit: Eric McCandless/ABC

Its a bloody episode, with a bunch of people saying goodbye, Gregg teases.

I read it and I was squealing.

This is going to be fun!

During this episode, he gets his powers, Gregg reveals.

Thats going to be incredible.

hey dont mess this up, was in my head more than once, Gregg jokes.

That ended up being really thrilling.

Marvels Agents of S.H.I.E.L.D.airs Fridays at 9 p.m.