Question: When do you find out who red coat is?
Disambiguated questions and answers: question: What episode do you find out who the third red coat is?
What episode do you find out who the second red coat is?
What episode do you find out who the first red coat is?
answer: Season 6 Episode 10
Game Over, Charles
"Game Over, Charles"
130
Now You See Me, Now You Don't
83
"Now You See Me, Now You Don't"
Grave New World
13th episode of the fourth season
"Grave New World"
84
Natural Questions answer: `` Grave New World '' (from the Wikipedia article "Red Coat (Pretty Little Liars)")