Perhaps the most compelling character arc in ER - Season 2 belongs to Dr. Peter Benton (Eriq La Salle) and his student, Dr. John Carter (Noah Wyle). Their relationship is the backbone of the season, representing the brutal, unforgiving nature of medical training.
And the audience, having survived 22 grueling episodes, feels like they earned that promotion alongside him. ER - Season 2
After surviving her suicide attempt in the pilot, Julianna Margulies’ Carol spends Season 2 rebuilding. She gets her own nursing storylines, fights with administration, and shares a few stolen, impossible moments with Doug. The elevator scene where they almost kiss but pull away defines "slow burn" romance. Perhaps the most compelling character arc in ER