Apple TV+'s Bad Sisters is one of the most satisfying dark comedies of the streaming era — a deliriously entertaining Irish series about four sisters who conspire to murder their monstrous brother-in-law, John Paul Williams, before he can destroy what remains of their family. Created by Sharon Horgan and adapted from the Belgian series Clan, the show interweaves timelines between the murder plot and its aftermath with the precision of a thriller while never losing the warm, raucous family dynamic at its heart. The Garvey sisters — played by Horgan, Anne-Marie Duff, Eva Birthistle, and Sarah Greene — feel utterly, convincingly real.

What makes Bad Sisters sing is its ability to walk the knife-edge between comedy and genuine emotional devastation. Claes Bang is superbly loathsome as John Paul, a coercive, controlling husband whose behavior escalates with every episode — you root for his demise not because the show tells you to, but because it shows you, with harrowing specificity, exactly why he deserves it. The insurance investigators played by Daryl McCormack and Brian Gleeson add a comedic layer that somehow deepens rather than undercuts the show's dramatic tension.

Sharon Horgan has spoken about her desire to make a show that was simultaneously a tribute to the bond between sisters, a meditation on grief, and a procedural thriller that keeps audiences guessing. She succeeded on all three counts. Bad Sisters is television at its most confident and most humane — genre entertainment in service of something genuinely meaningful.