A major revelation about the Silver Bells murders turns everyone’s world in the Hawthorne family upside-down: Christina loses trust in Garrett, Alison’s mayoral campaign sinks, Cam’s sobriety is tested, and Tessa witnesses disturbing new behavior in Jack. Also, Brady is worried that the new information about Silver Bells isn’t exactly what it seems to be.

The city is in a panic after the SBK’s accomplice strikes again. As Alison enlists Brady's help to clear her name and find the real culprit, Tessa suspects that Madeline knows more than she's letting on and Cam is forced to make a decision about Sophie's custody of Jack.

As the family gathers for Election Day, they attempt to identify the killer in their midst, but one of them won’t make it out alive.