In one scene, Jane says, "All this murder talk is rank; it stinks to heaven. It hath the primal eldest curse upon 't." He's paraphrasing from Hamlet, Act III, scene 3; Claudius expressing regret that he had killed his brother (Hamlet's father). The "primal eldest sin" is the Biblical story of Cain, who killed his brother Abel (Genesis 4 verse 8).
Jane is surprised to find that the Motorcycle Club has a website and merch. Most MCs do. That's how they recruit new members, (make a subtle show of strength) and make money for the club.
Red-haired actress: Julia Campbell.