Depending on which show you are referring to, here are the most relevant "papers" or guides:
Entertainment Weekly provides a recap of "Mr. Kaplan: Conclusion," which centers on the "truth" Red is hiding. Other Notable S4E21 Episodes [S4E21] The Last Word
: "The Double Death of the Dearly Departed." Discussion regarding character motivations for this episode can be found on Reddit . The Blacklist finale recap: 'Mr. Kaplan: Conclusion' Depending on which show you are referring to,
The search results for vary across different television series, and while none are titled "The Last Word," several episodes in this slot deal with themes of ultimate truths or finality. [S4E21] The Last Word