The team travel to Mexico to protect a government minister whose efforts to combat the drug trade have made him a target.
Benson puts herself at risk after a young woman takes a man hostage. The team discovers the reason for this abduction.
Frank worries when his first partner announces plans to publish a book containing stories of their early days on the force. Jamie and Eddie face choices that will affect their futures in the department and their relationship.
As Elizabeth prepares for a major live TV appearance, she struggles to hold herself together following the attack in Iran.
While Cal is on vacation in Mexico, he investigates a bizarre case of a missing woman; meanwhile, the rest of the team deal with reports of contaminated blood.
