I Know You

 is a stranger side-mission in Red Dead Redemption.

Story
The player will encounter a strange man south of Mescalero, who seems to know a lot about Marston's past and claims to know him from your days running with the Dutch van der Linde Gang. He asked the player to go to Thieves Landing to check on a friend of his, who is drunk and contemplating cheating on his wife. The man does not explicitly say to stop him, just to advise him on how to best proceed.

Whether the player stops the friend or lets him continue, the Strange man will comment on the decision in the second encounter, although it does not affect the outcome.

The player meets the Strange Man again in Nuevo Paraiso, where he suggests the player either help a nun who is collecting donations in a dangerous area, or simply rob her.

The third and final confrontation with the Strange Man takes place outside Beecher's Hope, where after more enigmatic dialogue, such as him not knowing his own name, collecting accounts of a sort, and being damned by many people. John loses his temper after asking the Strange Man for his name and fires on him, but the man is not affected by the bullets and walks away.

If this final encounter is not completed prior to the mission The Last Enemy That Shall Be Destroyed, players cannot complete this stranger mission. However this does not prevent getting 100% completion.

Walkthrough
thumb|300px|right After meeting the Strange Man, head to Thieves Landing and go to the saloon. The drunk friend should be on the porch. Players can either dissuade the drunk friend from cheating on his wife, or give him $15 to persuade him to cheat on his wife. Giving him the money will cause the player to lose Honor.

After the Fort Mercer missions, he can be found in Mexico, giving the player the choice of donating $10 to a nun, or robbing her. If the player chooses to donate to the nun, the player will have random encounters with other nuns asking Marston for a donation in the future (similar to other random encounters such as stand offs and wagon rescues). Choosing not to donate money will result in a loss of honor.

There is one last interaction with the Strange Man, on top of the hill overlooking the Marston Ranch in Beecher's Hope.

Note: This mission is only available for John Marston and not Jack. It is NOT required to get 100% completion. Since it will not be available for Jack's playthrough.

Interpretations
For more information on the popular explanations and thematic interpretations of this strange mission, please visit the Strange Man character page.

Trivia
For more Trivia on this strange mission, please visit the Strange Man character page.


 * There are many theories regarding who or what the Strange Man represents. The evidence most heavily suggests God, Satan, or Death (aka the Grim Reaper), as bullets do not harm him, his tasks for John are basic morality tests, and he seems to know everything about John, stating 'this is a damn fine spot' whilst standing on what will be the exact location of John's grave.

There are no other theories about the Strange Man at all and there never will be