A good detective has a sharp eye for details. No wonder Columbo is packed with little hidden treasures and trivia that likely escaped your eye. Naturally, Lt. Columbo himself would have sniffed them out if he were watching. Columbo worked cases for nearly 30 years, as Peter Falk slipped into his iconic trenchcoat to solve murders on television between 1971 and 2003. Over those decades, the mysteries packed in dozens of surprising guest stars (before they were stars) and recycled props in fascinating ways. Let’s examine the scenes.