I won't mention the other aspects, but Annan was very confident in his own acting skills and memory.
After seeing the portrait of Elle, he had memorized Elle's expressions and movements.
Thus, he reverse-engineered from the finished product back to the real person, perfectly replicating "Elle's" facial expressions and movements at that time, effortlessly leading Amos Morrison to complete this portrait without any suspicion.
But after all, Annan was not the real Elle Morrison.
Perhaps because Annan's performance was too perfect, even more like Elle than "Elle" herself... Or maybe it was because he really hadn't moved for over two hours, that hesitation appeared on Amos's face.
Was he becoming suspicious?
Or was it...
A faint impulse to kill flickered through Annan's heart.
The scenario was different from before.
