第四季开始，艾美奖得主Uzo Aduba饰演新主角，治疗专家Brooke Taylor医生。她将在诊疗中面对多元化的三位病人，与此同时也在与自己的问题作斗争。
Joel Kinnaman将饰演Adam。他是主角医生Brooke时分时合的男友，现在再次出现，让Brooke的生活变得更加复杂。
Anthony Ramos饰演Eladio，病人之一。他是一个有钱人家里成年儿子的家庭护理。
Liza Colón-Zayas饰演Rita。她是Brooke结交已久的知心朋友，给了Brooke很多支持。但Rita在经历
Vova and his best friend Kisa make ends meet by working for the local thug in Vladivostock, Russia until one assignment forces them to question their own morality and puts their friendship to the ultimate test.
A listless grand-daughter, Chance Sinclair , is sentenced to live with her draconian grand-father, August after a violent incident at school and begins to question the source of her families immense wealth and power. When Chance's scheming M
