Kate learns that dealing with an ex is always tricky, no matter the decade. After years of never saying sorry, Tully struggles with accountability.

Dr. Shaun Murphy’s attention to detail complicates his first day at St. Bonaventure Hospital. Meanwhile, Dr. Claire Browne learns a valuable lesson about honesty when confronted with a difficult diagnosis…

Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she’s letting Ruby down, and J’onn confesses an old secret.

Tess kidnaps Lois to find out where Lois went after she disappeared for weeks. Lois’s memory of the future depicts a Metropolis under Zod’s rule and Clark powerless under the…