a young girl when a brother was shot in the chest by a friend when playing with a hunting rifle. While the friend ran for help, Kayla cradled her dying brother. The nearest doctor was 25 miles away, so therefore Kayla's brother died in her arms. She then decided to become a doctor. Throughout the medical drama's seasons, Thornton rooms with various fellow staff members in her search for affordable housing. First she moves into Dr. Campbell's house, where she spends some of her time helping with Andy's two daughters. After Andy's departure, she rooms with Lana. She was later on selected as Chief Resident after narrowly missing it due to a complex emergency house call. We find out that she has a twin sister, Keisha (played by real-life twin sister Tia Mowry) who ends up needing 24-hour care for bipolar disorder. Rick Schroder as Dr. Dylan West (season 6). Replacing Dr. Campbell's role is Dr. Dylan West, a male women's health specialist. His gender raises initial eyebrows, especially with Delgado, who has also had past negative experiences with him as a resident. He has his own troubled past and seems to be seeking to redeem himself from something in his past. He is a diabetic, which becomes a recurring plot device. Dylan has tremendously bad luck in romance. One such former love interest arrives at Rittenhouse needing a new heart to survive; West is unable to save her life, but gains a teenaged half-Japanese daughter, Araya (Eileen Boylan), he never knew he had. His relationship with his daughter is troubled at first, but slowly they get to know each other. Nestor Carbonell as Jonas Rey (season 6; recurring season 5). A local self-made billionaire with a good heart but a large soulless corporation. He first appeared on Rittenhouse when his mother was brought to ER due an accident. While his mother was in the hospital, he saw Lu interacting with several of her patients. Even before he exchanged a single word with Lu, he told his mother he'll marry her. He met and pursued Lu until she agreed to date him. They got married in the middle of the final season. After personally bringing sick South American children to Rittenhouse for treatment, Jonas is plagued by an embezzlement scandal at his company, bringing his fortune and stability into doubt. After discovering that Lana had stock of his company, he