Federal judge Charles Pollan is killed in broad daylight, and a quote from his killer leads the team to the local Islamic center, where they encounter undercover agent Hassan Khalil.
It's revealed that Khalil is working with Maggie's former Quantico mentor, Jessica Blake, on taking down an Islamic terror cell which the killer is suspected of being involved in.
Angela Lane, an employee with the Bureau of Land Management is sprayed with ricin gas on the subway and dies shortly after.
Retired FBI agent Mike Rosen is abducted, tortured and killed after being forced to provide a group of robbers the location of a diamond transport from his security firm.
Maggie returns from maternity leave as the team investigate the death of truck driver Lucas Chandler, but his cargo has not been stolen.