Ryan (from “Stray”) returns and Clark has to save him from Dr. Garner of the Summerholt Research Facility. Meanwhile, Aunt Nell leaves Smallville, and Lex wants to expand the plant…

A man from Lex’s past stalks him in conjunction with a mysterious death at Club Zero that Lex may have been responsible for. Meanwhile Chloe looks into Clark’s past as…

Hook and Emma try to find their way back to the present and correct the mistakes they made in the past.

At Henry’s urging, Emma convinces Mary Margaret to pay a visit to a comatose John Doe in the hospital and to read to him from the storybook. But Mary Margaret…

Supergirl challenges Rhea to battle to save National City. Meanwhile, Superman returns and Cat Grant offers Supergirl some sage advice.