To the average passerby it would seem as though several rooms in the manor at the end of the avenue were occupied, but Butler knew that the bulbs in these rooms were all on timers, and would alternate at irregular intervals. There was even a stereo system wired to each room that would pump talk radio into various areas of the house. All measures designed to put off the casual burglar. None of which, Butler knew, would put off a professional thief.

The Opal Deception, Chapter 6