If You Believe in Me, I'll Believe in You

Tommy Elliot gets his trademark comic book appearance in this episode. Complete with the bandages covering his entire face and trenchcoat. Unlike the comic Hush, however, Tommy actually needs them for medical reasons, as his head has been completely skinned.

The experiments Alice describes being conducted on the inmates at Arkham would be very illegal in reality in this century. Also, it's illegal to commit someone to a mental institution against their will without a court order, which Jacob and Kate can't have gotten because they're keeping the fact Alice is related to them secret and she had no trial.