When Life Is Stranger Than TV

The actor Mark Feuerstein, 46, is based in Los Angeles, where he lives with his wife, Dana Klein. But he comes east four or five times a year. And his home away from home is apartment 9-J, a two-bedroom pied-à-terre on the Upper East Side. His parents are right next door in 9-K, and for a while his older brother sublet an apartment down the hall, a situation that inspired the new CBS comedy “9JKL.”