This week brings us Rip and Canary continuing their 1970s shenanigans, Atom making a fantastic voyage, Cold meeting his cool younger self, and the show making cryptic references….

“Blood Ties” foreshadows the forthcoming appearance by Jonah Hex, but also rips a line about “men of steel” and “dark knights.” Do Superman and Batman exist in this universe, after all (perhaps due to the Flash’s forthcoming crossover with Supergirl)? Will they exist at some future date? Or is the reference a throwaway?