It’s been 8 years since Project LEDA was destroyed for good, but all is not well.
Cosima suggests something unthinkable after Charlotte's discovery, and Vivi faces a disaster in the lab.
Ex-cop Art Bell gets an unwelcome visitor, Cosima learns what GRIT had been up to, and Vivi digs deeper into her lookalikes.
As Vivi gets closer to the truth, the sestras convene an emergency Clone Call, and Charlotte makes an outrageous proposal.
Clone Club discovers they’ve been infiltrated, Charlotte makes a shocking discovery, and Cosima finds herself in hot water.
Sarah meets Vivi, Charlotte’s condition worsens, and one of Clone Club’s worst fears becomes reality.
The worst has happened; now the real fallout begins.
Kira begins to understand the magnitude of what has been unleashed.
Alison and Donnie's undercover mission takes them to tantalizing places and Vivi talks to the sestras.
Art’s in danger, Charlotte makes a revelation, and Vivi confronts the weapon developer.