A social worker brings Ali in on an a case of possible child abuse. Ali protests that it's out of her jurisdiction, but the same couple lost another child to an ""accident"" a couple of years before that could have been abuse. Bobby Johnson is a cold file. As the investigation proceeds, the relationship between Ali and Inspector Ross heats up and Ali learns that he is divorced. She also has to discover there's a fine line between business and personal issues and she's confused.

After Ali hits a young boy with her car after having a fight with Simon, she soon finds herself not only fighting to prove her innocence, but also fighting to get her job back, which she was stripped of without her knowledge while on vacation. Cold Squad has been turned into a provincial task force, and the only member of the old guard left is Logozzo, so Ali has to prove herself to Coscarella, the new sergeant in charge.