Jason Altman

On the season premiere, Danny consults a psychic to solve a murder; Frank is at odds with the mayor; Erin investigates a decades-old case.

Root and Finch race to save the machine after Samaritan locates it; Reese is caught in a showdown between Elias and Dominic.

After a member of the inner circle of a terrorist organization falls ill with a deadly virus, Elizabeth attempts to use his weakness to secure the release of a group of schoolgirls that are being held captive.

Ellen and Brian agree that they need to take down Duncan to have any chance of escaping, so she sneaks away to see a man who has previously helped her solve problems. However, unbeknownst to her, this man has ties to Duncan. Meanwhile, Archer's accomplice plans to reveal to the Assistant District Attorney information about a murder Archer committed. Recurring guest star JOANNE KELLY (Warehouse 13) appears as Vanessa, sister of the First Lady, Mary (recurring guest star MARY ELIZABETH MASTRANTONIO).