Dr. Carrie Roman

Carrie Roman arrives at All Saints as a young doctor eager to prove herself, sharp-tongued and ambitious in a hospital that runs on shortcuts and hard-won cynicism. She wants respect and results fast, pushing against the slower, weathered rhythms of the nurses and doctors who have seen it all before her.

Betty Gilpin plays her with a brittle, forward-leaning energy that makes ambition look almost like nerves — a doctor trying to out-armor a building full of people who've already been humbled by it. She's fun to watch precisely because her confidence seems newly built, and you can see the cracks the job is already finding.