Luke Crain

Luke Crain is the youngest of the Crain siblings, and the one whose life has come apart most visibly: in and out of rehab, chasing the next high, treated by his family as a problem to be managed rather than a person to be heard. Underneath the addiction is a gentleness and a fear nobody quite wants to look at.

Oliver Jackson-Cohen plays Luke's addiction as a symptom rather than a personality, so the charm and the desperation feel like two sides of the same wound. The show lets him be genuinely lovable before it asks you to understand why he's the sibling everyone else has quietly given up on.