NOTE: If you are looking for help in CATCHING Charles Lee, see here: Assassin's Creed III: How to Catch Charles Lee
The article below is for an earlier objective from sequence 2.
"Follow Charles Lee" is the first objective in the mission Johnson's Errand
Walkthrough[edit]
Just follow Charles Lee up the stairs in the Green Dragon Tavern
He is taking you to meet William Johnson
After talking to William Johnson, follow Charles again, and exit the tavern.