How to Tell Which Universe You're Watching During 'Dark' Season 3

(This article does NOT contain spoilers for season 3 of “Dark” on Netflix) The very last scene of season 2 of Netflix’s insane German time travel series “Dark” introduced a pretty gargantuan new wrinkle to the already very wrinkly show. This time loop that’s affecting all the residents of Winden was complicated enough, and then a different version of Martha (Lisa Vicari) shows up and starts talking about alternate universes. It was a totally mad note to end the season on, but now tha...