The car that Karen drives off with used to belong to Ben Urich.
Grotto mentions the "part of New York that looks like a goddamn war zone." This foreshadows the coming of the Punisher because "Punisher: War Zone" was a comic series in the 1990s.
This is the only episode in which Frank Castle appears without substantial bruising on his face.
Jon Bernthal joins the cast as Frank Castle/Punisher. He and Vincent D'Onofrio (Wilson Fisk) were both in The Unforgivable.