-In this episode: In this bonus episode Paul Levinson discusses the origins of The Silk Code with reader Shaun Farrell.

-In this episode: The killer attempts to murder Jenna, an action that reveals his identity and solves the many mysteries of the silk code.

-In this episode: Amanda's secrets are revealed, Bonnie discovers new evidence in the Tocharian manuscripts, Phil plants a red herring and the killer plans his final move.

-In this episode: Amanda is attacked, Phil learns about Jacquard Looms, evidence goes missing and Phil and Mallory finally confront each other.

-In this episode: Not knowing whom he can trust, Phil D'Amato loses yet another colleague. He learns more about the silk cure and the Tocharian manuscripts, which seem to tie Neanderthals to the ancient Singers.

-In this episode: Phil becomes a suspect in the deaths of Debbie and Tesa while an unseen murderer plans his next move.

-In this episode: Phil discovers a Tocharian manuscript that seems to connect an ancient people called Singers with the Neanderthals, and the severity of Phil's case takes on deeper meaning after a brutal murder.

-In this episode: Phil meets with Tesa and forms some scientific theories to explain the Neanderthal virus. Phil's second meeting with Stefan promises trouble in the future.