2/3/2021 Katherine Heigl and Sarah Chalke play the 20- and 40-something versions of their characters in Netflix's new drama about lifelong friends suddenly at a crossroads. The 30-year friendship between two women — one, a housewife; the other, a nationally syndicated talk-show host — comprises the heart of the new Netflix drama Firefly Lane. Sifting through the layers of hurt, jealousy, rivalry and of course mutual support between self-sacrificing frump Kate (Sarah Chalke) and her glamorous, emotionally stunted bestie Tully (Katherine Heigl), this Seattle-set adaptation of Kristin Hannah’s 2008 novel often feels like a Lifetime treatment of My Brilliant Friend. It’s a rich premise squandered by awkward casting, tearjerking storylines and knee-high ambitions.