Nikolai Witschl

When a piece of Atom's suit falls into the wrong hands during a massive fight, professor Stein decides to turn to someone brilliant for help, his younger self. Carter helps Kendra recover an important memory.

Sara finds a way to hit multimillionaire Vandal Savage where it really hurts. Snart has an ulterior motive when he sends Jax to steal a valuable gem.

Emma and Regina race to find Henry before Gold finds him. Snow, David and Zelena are imprisoned and face two disturbed individuals.

Mulder and Scully investigate the sudden death of a scientist, which leads them to a laboratory that has been breeding subjects with incredible powers by engaging in genetic experimentation.

Chloe and Lucifer hunt for the killer of two young LA transplants who were poisoned, and Maze and Chloe make a shocking decision.