As much as it pains Gabriel, his duty calls him to move instead stay behind and try break in to tower where lady Luna may have gone just for moment or privacy or that she may be in danger. As good measure if any he glances the tower with his evil detection gaze, as that gaze is not blocked by most anti-divination defenses what tower has besides thick bricks. But even thick bricks would not block if there was powerful evil presence in the tower. If not seeing nothing he heads out from the tower and starts head to old city district where he hopes the knights and Dain are ready. They had agreed they meet a district block away from main area as Gabriel needs inflitrate the place first so he goes in first and then few moments knights move positions to wait for his signal. Which is plainly put to 'become blazing golden torch'.