HOWELL, Mich. The owner of a well-known Howell restaurant is suing former employees who criticized his business on social media. For more than two years, Kristen Kraft tended the bar and trained waitstaff at Howells Cello Italian Restaurant. Adam Merkel is the owner of Cello and a couple of other Howell eateries: the Silver Pig Bar and Oyster Room, and Diamonds Steak and Seafood. Out of work, Kraft said she found other former Merkel employees on Facebook. Merkel said Kraft and others attacked his business and cost him in a big way.