Sam and fam get caught up in some gnar.

Owen and Teddy have to deal with the surprise arrival of Megan Hunt, who knows nothing about their situation. Catherine preps for her first surgery back on a war veteran who’s not emotionally prepared for his procedure. Meredith worries about DeLuca operating alone with Richard.

The SVU investigates a he-said, she-said case when a woman crashes a wedding to accuse her therapist of sexual assault.

Sam and Dean race to help a friend in need. Meanwhile, Mary is concerned for Jack’s wellbeing, and Castiel enlists help from Jo/Anael to track down a miracle.

Amy jumps at an amazing career opportunity, only to run up against an exec with a major grudge against her. Jonah and Mateo help Glenn with a financial problem, while Garrett and Cheyenne struggle to spend a day without cell phones.

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip Thorne, George Smoot and Frances Arnold to their side. Also, Halley’s fear of the dark leads to opportunity and conflict for Howard, Bernadette and Stuart.

Actor Kit Harington; actress Elle Fanning; Khalid performs.