Absentia

Emily Byrne struggles to make sense of her time in captivity and her tumultuous past. Meanwhile, a deadly terrorist attack rocks the heart of Boston, drawing Special Agent Nick Durand and the FBI onto the case.

With the Fentanyl Killer’s spree escalating, Emily and Cal fear the next victim will be someone they cannot afford to lose.

Emily and Cal travel to Moldova to track down the Fentanyl Killer - a task that proves to be even more perilous than anticipated.

Emily realizes that Rex Wolf was working for someone connected to both her past and her present. She finds she can rely on Nick for help, but how to make sense of the puzzle? Emily resorts to extreme measures when she realizes the threat is close to home.

Emily hits a dead end, but suspects it's not over, and follows the remaining shreds of evidence to a wrenching season climax .