Justin Theroux Kevin Garvey Actor Amy Brenneman Laurie Garvey Actor Christopher Eccleston Matt Jamison Actor Liv Tyler Meg Abbott Actor Margaret Qualley Jill Garvey Actor Chris Zylka Tom Garvey Actor Carrie Coon Nora Durst Actor Janel Moloney Mary Jamison Actor Kevin Carroll John Murphy Actor Jovan Adepo Michael Murphy Actor Regina King Erika Murphy Actor Scott Glenn Kevin Garvey Sr. Actor Lindsay Duncan Grace Playford Guest Star Katja Herbers Dr. Eden Guest Star Vanessa DeSilvio Well-Dressed Woman Guest Star Natalie Gold Young Mother Guest Star Francis Greenslade Officer Gerard Guest Star Victoria Haralabidou Dr. Bekker Guest Star Neil Melville Captain Guest Star Damon Lindelof Executive Producer Tom Perrotta Executive Producer Peter Berg Executive Producer Sarah Aubrey Executive Producer Patrick Somerville Writer Carly Wray Writer Carl Franklin Director