I worked for a Company and They Didn't Pay Me and Continue to Not Pay Me, What Do I Do?

I worked for a restaurant in the area, while there, two owners ran the business. The first owner, sold it to the second owner. They decided to keep me on as their cook. For the first couple of months, they paid me just fine, on time, with check stubs and everything, however, after that, the checks stopped coming. I kept getting Promises of money, that would never come. They kept my time on a spreadsheet, and after 4 months of not getting paid (I had another job), I put in a two weeks notice, and left, because I wasn't apparently ever going to get paid. We have kept in touch, but its more promises and no money. Do I sue them for the money? It's almost been a year and I would like the money.