Kevlar is not stab proof. Slash and bulletproof, but not stab proof.
Despite Doe crashing into it in a shower of sparks, the Sacred Heart Mission sign seems to be completely undamaged in the reverse shot.
How could the killer slice through Doe's t-shirt shirt so cleanly and not even nick his skin?
Hayes looks awfully blasé considering Doe is lying in the street after an electrical shock and a fall from a fire escape.
There is no way you can pinpoint time of death within seconds via an autopsy.
Two lightning bolts don't have to collide to create thunder. One is enough. (specifically - "Thunder is the result of the explosive vaporization of the air in and around the lightning channel. The air expands at a rate faster than the speed of sound and generates a sonic boom, we call thunder in this case.")
John: Thanks for staying.
Digger: I'd expect the same from you if I get a million watts up my ass.
John: I want to be stumped. I need to be stumped.
Digger: Whatever gets your rocks off, pal.
Dion Luthor, Haig Sutherland, and Jack Keating all reprise their role from the first episode.
This is Rekha Sharma's final appearance as Stella.