To properly end the series, footage from the nineteenth episode has been added to the eighteenth episode. The cast and crew were halfway through production when it was halted.

Taraji P. Henson and Terrence Howard in Empire
Production on the final season of Supernatural was also halted due to the coronavirus, which may result in an incomplete ending. It is in the same situation, eighteen episodes out of twenty have been entirely produced. For now, thirteen episodes have been released. The creators of Supernatural have decided to eventually produce the final two episodes and then air the last seven episodes.