In her locker, Lana has photos of Lewis Lang, Laura Lang and Nell Potter. However, no photo of Henry Small, her biological father.
Lex says Lionel tried to pin the Metron murders on him, which were committed by Adam Knight in "Crisis". He also mentions the deaths of his psychiatrist, Dr. Foster, who was killed during the events of the episode "Asylum", and his investigator, Mason, who was killed during "Magnetic".
The confession Lex used to arrest Lionel was obtained by Chloe in the episode "Truth."
Clark uses the following abilities in this episode: super strength, super speed, X-ray vision, and heat vision.
Emily Dinsmore last appeared as a 10-year-old in last season's episode "Accelerate."