A photo of a missing 19 year old surfaces on the 17th anniversary of her disappearance. That case was Sandra's first, and now she's determined to solve it, despite pressure to hand over the investigation. Faced with a new opportunity, Sandra turns for advice to a beloved voice from the past

The team has 24 hours to investigate a corrupt senior official who may haave surressed evidence. The case has ties to Sasha's past: a crime boss jailed because of the official's actions may have murdered her former partner on the force.