Warning: Spoilers for “Yellowjackets” season 2. Do not read if you have not watched episode one, “Friends, Romans, Countrymen,” written by creators Ashley Lyle and Bart Nickerson and directed by Daisy von Scherler Mayer. The creators, showrunner Jonathan Lisco, actor Sophie Nélisse and others break down the season 2 premiere while speaking with ET’s Deidre Behar.