“Smother” (July 1, Peacock)

On the night of their big party, a big, seemingly happy family gets upended when someone winds up dead. As they and the rest of the community in a coastal Irish town try to solve the murder, they’ll each have to reckon with decisions from their past. The show, written and created by Kate O’Riordan, stars Dervla Kirwan, Niamh Walsh, Seána Kerslake, and Gemma-Leah Devereux.