Oscar winner Kate Winslet returns to the small screen for the first time in a decade since her Golden Globe-winning performance in the title role of Mildred Pierce to play a small-town Pennsylvania detective in a seven-part mystery. Mare Sheehan (Winslet) keeps the peace in the close-knit community of Easttown, where secrets are passed down from one generation to the next. She is at loggerheads with her rebellious daughter Siobhan (Angourie Rice) and tensions are exacerbated when a murder on Mare's patch turns friends and neighbours against one another. Detective Colin Zabel (Evan Peters) is called in to assist with the investigation as Mare's family life implodes. She turns to childhood best friend Lori (Julianne Nicholson), her mother Helen (Jean Smart) and local writer Richard Ryan (Guy Pearce) for emotional buoyancy.