Having examined the area to the sea side of the property, Bob was planted there at 9:40, expecting to see Kian.
It was extremely dark on the beach, not a single light.
Bob waited, looking for movement, right and left, seeing nothing.
Then, he heard Kian playing.
How had he gotten to that point on the veranda without passing Bob?
That meant he must have entered via the hotel. Bob moved to be behind Kian.
He couldn’t see him due to the height of the veranda. Didn’t matter. He would wait here.