PRIVATE PRACTICE - "Serving Two Masters" - Addison treats two pregnant women who unknowingly share the same husband, a visit from an Alzheimer's patient and her loving husband forces Sam and Naomi to look at their own relationship, Violet confronts Charlotte about her relationship with Cooper, and Dell reveals a very special woman in his life to his surprised co-workers, on "Private Practice," WEDNESDAY, NOVEMBER 19 (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/ERIC MCCANDLESS) ALEXIS DENISOF, ALEXANDRA HOLDEN, KATE WALSH