The Department of Emotional Integrity (DEI) documents all relationship activity. A 'relationship score' is given to keep people accountable for their choices. The score is public for all to see, and affects various aspects of daily life. Two couples, teenagers and early 30s, face different but intersecting challenges in their relationships within the rules of the DEI.

A former hitman encounters with Death in an ultimate attempt to save his daughter's life.

An elite team of FBI profilers analyze the country's most twisted criminal minds, anticipating their next moves before they strike again. The Behavioral Analysis Unit's most experienced agent is David Rossi, a founding member of the BAU who returns to help the team solve new cases.