Shades of Blue (season 3)

The show tells about Harlee Santos, a talented detective working in a cohesive team of the Brooklyn police department that is headed by cruel and just lieutenant Wozniak who likes radical methods in work of his unit. These methods are often outside the law, but they are necessary to protect his wards. Hardly making ends meet Harlee raises her little daughter in her spare time. So when she is offered a well-paid job the heroine is agreed for it.