A decoded tattoo leads the team to a mysterious cache of dolls which turn out to be vehicles for biological weapons being sent around the world and now to the FBI. Jane exploits the fear of the weapons to advance her own plan to recover Shepherd.

A blast from Rich DotCom's past sends the FBI team after a deadly terrorist plot.

Reade confronts Zapata, while the team follows a lead to a potential cure for Jane.

Patterson's father, Bill Nye, returns for a case that pits the team against a pestiferous foe. Zapata goes rogue with an old friend. Jane and Weller continue their search for the hooded figure.