When Evan and Mitch wanted to leave the room the raven flew to Mitch and said:"Because you gave my the choice of my transformation I give you a hint. Pair up again, so you find the treasure faster."
With this words the raven flew to the ceiling and vanished into the shadows.
Mitch and Evan went through the next door and stood into a corridor.
Following the hint of the raven, Mitch went into the north direction and Evan went into the south direction.