Saints of the shadow people. Page 38.

  'Fine, sir,' Rebus assured him, watching as McCuskey and Bell headed for the exit.

Just that there's a train thought (a series of connected thoughts or events) says maybe a careful driver wasn't behind the wheel.'

All minor stuff as far as it goes, but fleeing the scene of an accident… and tampering (to meddle, try to change or have an influence on things that are not your responsibility, especially for the purpose of altering, damaging, or misusing) with the scene.

Traynor saw Rebus out (to be present at the departure of), walking with him all the way to the main foyer.

     'We'll question him in the morning,' Rebus explained. 'See if we can move things along (to continue to move).