Read it through once

Lenehan walked as far as the Shelbourne Hotel where he halted and waited. After waiting for a little time he saw them coming towards him and, when they turned to the right, he followed them, stepping lightly in his white shoes, down one side of Merrion Square. As he walked on slowly, timing his pace to theirs, he watched Corley’s head which turned at every moment towards the young woman’s face like a big ball revolving on a pivot. He kept the pair in view until he had seen them climbing the stairs of the Donnybrook tram; then he turned about and went back the way he had come.