I Know You

 is a 3-part Stranger side-mission in Red Dead Redemption.

Story
Marston encounters a strange man south of Mescalero, who seems to know a lot about Marston's past and claims to know him from his days running with the Dutch van der Linde Gang. However, the strange man is very coy and never reveals how he knows Marston.

He then asks Marston to complete a couple of tasks, both of which turn out to be moral dilemmas. And the Strange Man's tone hints at what course of action he believes Marston will take in each case.

Mission Segment Prerequisites
Before the first segment of this mission becomes available, the player must complete:
 * Bonnie MacFarlane mission: "A Tempest Looms".

Mission Segment Objectives
To complete the first segment this mission, the player must:
 * Speak with the Strange Man about his friend.
 * Ride to Thieves' Landing and locate the Strange Man's friend.
 * Either encourage or discourage his activities.

Mission Segment Details
After meeting the Strange Man, head to Thieves' Landing and go to the saloon. The drunk friend should be on the porch. The strange man does not explicitly say to stop him, just to advise him on how to best proceed. 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, unless the bandana is equipped.

Mission Segment Prerequisites
Before the second segment of this mission becomes available, the player must complete:
 * Irish mission: &quot;We Shall Be Together in Paradise&quot;; and
 * Stranger side-mission: "" Part 1

Mission Segment Objectives
To complete the second segment of this mission, the player must:
 * Speak with the Strange Man about a nun with a dilemma.
 * Ride to Las Hermanas.
 * Either aid or rob the nun.

Mission Segment Details
This time the Strange Man can be found in Mexico. Specifically, travel south on the road just west of El Matadero and you should see the question mark on your minimap at the top of where the elevation lines form a J. This time the Strange Man gives 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.

Mission Segment Prerequisites
Before the final segment of this mission becomes available, the player must complete:
 * Abraham Reyes mission: &quot;An Appointed Time&quot;; and
 * Stranger side-mission: "" Part 2

Mission Segment Objectives
To complete the final segment of this mission, the player must:
 * Speak with the Strange Man one final time.

Mission Segment Details
The third and final confrontation with the Strange Man takes place outside Beecher's Hope. We hear 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.

Note: If this final encounter is not completed prior to the mission &quot;The Last Enemy That Shall Be Destroyed&quot;, players cannot complete this Stranger side-mission. However, this does not prevent the player from achieving 100% Completion.

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 fine spot" while standing on what will be the exact location of John's grave.
 * It has also been suggested that the Strange Man is John Marston's Guardian Angel.
 * One of the reasons to suggest he is "God" apart from him knowing everything about John is when he says he's sort of an accountant (which makes sense if you think of "people" instead of "money"). Also when John says "Damn you!", he replies with "Many people have", which most people do say Goddamn for one reason or another.
 * Another reason is that during the second encounter in Mexico, a donkey can be seen in the background, which is one of many symbols referring to Jesus.
 * After speaking to the man for the second mission, he can be pushed onto the fire. The results are quite humorous.
 * Giving the nun $10, then killing her after the second mission, rewards the player with over $300.
 * Despite the man being unharmed by John shooting at him in the final cutscene, it is still possible to kill him outside of cutscenes by simply shooting at him. This will cause you to fail the mission and the loss of honor.
 * This is the only Stranger mission that Jack cannot perform.
 * Another theory suggest the man could be John Marston's father, or a close relative. If the player goes to Beecher's Hope and look at the pictures on the wall in the house, he will see it's the same man. Though it is strange that John wouldn't recognize his own father, if he had pictures of him, though John was described in the game as an orphan.
 * This might be totally random, but if you draw lines between the three spots where the Strange Man was met on the map, it will create an equilateral triangle, or in this case, the Trinity; the symbol of The Father, The Son and The Holy Spirit. Yet another evidence suggesting the Strange Man is God. This is also a very weak clue, but when adding together the Strange Man saying he is a sort of accountant and other mysterious quotes (God), he speaks about his son and there is a donkey at the second encounter (Jesus) and the fact that he is invincible during the last encounter (Spirit?) makes it even more obvious, and mysterious at the same time.
 * The Man states "I hope my son turns out like you". In the sense the man is God, then this would refer to Jesus.
 * Scratched on the wall in the barn at Beecher's Hope is the phrase "Oh my son. My blessed son", however this is just a cheat code.
 * Another reason that the strange man may be God is that John Marston at the very begin says "Do I know you?" and the strange man responds: "I hope so".
 * The man states "I'm an accountant...of sorts", which could mean that he is the Grim Reaper. Also, bullets don't affect him, as Death cannot die.
 * Alternately it has been suggested that he is actually Jack Swift's given their indentical appearance aside from hats, aswell as personality and the fact Swift also mentioned he was an accountant.

Achievements/Trophies
Aiding Strangers will contribute toward the following Trophies/Achievements:

Te conozco