When a prominent attorney goes missing in Boston, the BAU unearths secrets in his past which could point to the reasons for his disappearance.

When a Maryland family is found murdered at their dining room table, the team tracks down other family members and friends to uncover secrets that may have led to it. Also, Hotch must try to make peace with his father-in-law, Roy, after discovering he’s been diagnosed with Alzheimer’s.

The BAU searches for an UnSub who may be fascinated with medical experimentation.

The BAU team is called in to investigate when male victims are found with no way to identify them.