The sound of the door closing brought me out of the world of numbers I had entrenched myself in. Not the sound itself, but the particular tone. When your life slips into a steady rhythm and the harmonies blend perfectly, it is easy to notice a single missed note. Although the door did not have the force of a slam, something about its dull note seemed off.
I slid my chair away from my desk and got my head through my office door just in time to see the bottom of my son’s feet disappearing up the stairs.
A familiar, “Yeah?” came floating down from somewhere above. Again, something seemed off. A note slightly off key. I couldn’t say which one, only that I heard something that shouldn’t have been.