Lost Tuxedo Cat: Help Find Our Timid Friend

A six year old male black white short haired tuxedo cat with white cheeks, white dot on his forehead, white paws and belly. He is timid and might be hiding or has possibly fallen in to a window well or got closed in a shed or garage somewhere. We are very worried as he always comes home for the night and for his meals. He was seen last time in our backyard at 9 PM Monday evening, July 22.