The actor and producer brought us comedy gold together on NBC’s “The Good Place,” and individually contributed to some of the best TV of all time. There’s Danson’s long “Cheers” career, plus “Curb Your Enthusiasm” and many more, and Schur’s string of sitcom successes with series like “Brooklyn Nine-Nine” and “Parks and Recreation.” So when the pair teamed up for a new Netflix mystery comedy, it surely meant bigger and better things, right?

Unfortunately, their new series set in a San Francisco retirement home, “A Man on the Inside” (streaming now, ★★ out of four), doesn’t have the spark of “Good Place” or “Brooklyn.” A lightweight mash-up of themes and ideas, the series feels like it’s still a sketch on the drawing board rather than a fully realized story with a beginning, middle and end. It all sounds good on paper, but it’s a shame in the execution.

It’s a shame because the story and the creatives involved had so much potential. Danson, still as charming and magnetic as ever, plays Charles, a mild-mannered retired professor who struggles to find a groove in his new life after his wife died from a long battle with dementia. He answers a newspaper ad saying he’s a spy – well, sort of like a spy. Private investigator Julie (Lilah Richcreek Estrada) is hired to recover a priceless necklace stolen from an old woman in the luxurious Pacific View community. Julie needs someone over 70 to move in with her and investigate what happened. Charles shows up with a working knowledge of a cell phone and a great eagerness to please, so she hires him.