“Dying for Sex” introduces Michelle Williams as Molly, a cancer patient whose terminal diagnosis gives her a new lease on life.

Soon thereafter receiving her diagnosis, Molly works up the courage to leave her apathetic husband, played by Jay Duplass, in the hopes of dying with her best friend, Nikki (Jenny Slate), while she explores her sexuality for the first time.

Along her journey, Molly connects with several formative people, both at the hospital, as well as in her personal life. The real Nikki even has a cameo in the FX series.

Sarah Shatz/FX

Michelle Williams as Molly

Michelle Williams stars as Molly, a cancer patient whose newly discovered terminal diagnosis plunges her into a journey of self-discovery and sex, ditching her husband to die with her best friend, Nikki.

After getting her start starring in “Dawson’s Creek,” Williams has starred in “Manchester by the Sea,” “Blue Valentine,” “The Fabelmans,...