The 'Mad Men' star's TV daughter, Kiernan Shipka, also got in on the throwback game.
Raise your hand if you have a lot of questions about 'Riverdale's time jump... Good. Now it's time to get some answers.
Is this the ultimate "endgame?"
Kiernan Shipka and Gavin Leatherwood dish exclusively to ET about Nick and Sabrina's 'happily ever after' twist in the series finale.
The Netflix series ended with a big twist -- and Shipka wasn't exactly praising Satan.
Spoiler alert! Kiernan Shipka is telling ET what she really thinks of Sabrina's final scene in 'Chilling Adventures of Sabrina' Part 4!
Holy Hell -- 'CAOS' is really coming to an end.
Listen up, witches! Kiernan Shipka and the 'Chilling Adventures of Sabrina' cast are spilling exclusive secrets about the final season!
'COAS' comes to a close on Dec. 31.
The supernatural series announced on Wednesday that its fourth and final chapter will debut later this year.
The cast of the Netflix series breaks down the biggest moments from the latest batch of episodes.
Spoiler Alert, Witches! Only ET has Kiernan Shipka and the 'CAOS' cast explaining the Part 3 finale and what that two-part twist means!
Spoiler alert, Witches! Only ET has Kiernan Shipka and Gavin Leatherwood reacting to Sabrina and Nick's hellish relationship twists.
Only ET is taking you inside the Spellman house with stars Kiernan Shipka and Gavin Leatherwood.
