Andy McNally's dad was a homicide detective, and she feels the need to carry his baggage to prove herself. She was dating Luke Callaghan, who is also a detective, and even was engaged to him for a while. However, after Luke slept with his ex-girlfriend, Andy broke up with him.

While dating Luke, Andy kissed Sam Swarek, who is her training officer, and now has her eye on him. However, Sam's not around right now due to an secret mission.