Murray Bartlett as Dom Basaluzzo, 39,[3] a sommelier in a gastronomic restaurant.[5] Dom was raised by a single father who died when Dom was in his early twenties. Lauren Weedman[4] as Doris, Dom's best friend since their high school days in Modesto and former partner, who works as a nurse (season 2, recurring season 1). Doris grew up with a father who was very loving as well as a mother who was emotionally abusive due to mental illness.