The setting of Nocturne is different from other restaurants; it's situated on the sea.
Outside the restaurant is a long pier, the only road for entrance and exit.
Summer Ford entered just two or three minutes before him, so if she left the restaurant, the two would definitely meet on the pier.
However, when Ethan Laurent came in, he didn't see her.
This can only mean that she is still inside!
Nocturne is divided into several floors, with an exterior shaped like a palace. Each floor has four passages, with two rows of private booths along each passage.
Ethan Laurent's first target was the passage leading to the booth he and Summer Ford often frequented.
He thought if she came to dine specially, she probably wouldn't suddenly change booths.
If something happened, it could only be on the way to the booth they usually visit!
His thinking is exceptionally sharp, and he predicts things accurately.
Indeed, Summer Ford and Snor Fairchild were seated in the passage he was searching.
