Why can't women stay friends?
That's a trick question, of course, but also one that British actresses Emily Mortimer and Dolly Wells -- lifelong pals in real life -- attempt to answer earnestly and honestly in their new HBO cringe comedy Doll & Em. In the six-episode series, Mortimer and Wells play sitcom versions of themselves as a thriving Hollywood thespian and her best-friend-turned-personal assistant, respectively. One has reached just about the highest level of success a middle-aged film actress not named Meryl Streep or Cate Blanchett can; the other is so lost any opportunity looks like a step up. They reside in the same rented house, but live in entirely different worlds.