Rob Sedgwick

The investigation leads the team to a dangerous serial killer linked to Theo, while Theo and Penny (guest star Megalyn Echikunwoke) seek refuge from an unknown source with the means of helping them disappear. Meanwhile, Ryan struggles with recent events, sending him into a downward spiral, and the search continues into which agent has been accessing Daisy's laptop from inside the FBI.

When nine flu victims suddenly die, Green and Fontana learn that all had been injected with a fake vaccine, which leads to the arrest and prosecution of a longtime con man.