Erin Yolanda Pineda

When an anger-driven, unknown subject targets successful businessmen in Detroit, the BAU must investigate.

A string of break-ins takes place at Marine Base Quantico.

Katie, jealous of Taylor's friendship with neighbor Viv, reluctantly competes in the Westport Halloween Zombie Run after she finds out they'll both be running. Meanwhile, Greg and Anna-Kat get a little too much in character for the zombie part of the run's obstacle course.

Callen and Sam pull Granger's daughter, former spy Jennifer Kim, from witness protection to help the team locate an underground spy who has obtained an arsenal of bomb material.

When Penny learns that Pete wants to elope, Jane takes them to a wedding expo in hope of changing his mind; Dave and Alex deal with their unresolved issues.

A guilt-ridden Magnum follows the clues his private investigator friend left behind when he was shot while working a case Thomas passed onto him; TC helps Kumu lead a protest against construction on a Hawaiian sacred site.