When a BAU member gets in trouble in Mexico, the team enlist the help of the International Response Team for assistance.
The BAU is called after three victims are found tied to stakes in the Arizona desert.
Victoria questions her relationship with Emmet when a woman from his past shows up, Melanie and Elka contend with an unwanted guest, Joy falls for a handsome doctor.
Mayor Neil rolls out a new safety initiative as Arpi trains him for his most challenging task yet; Mikaela and Tommy realise the clock is ticking for them to find love.