Henry questions Martian's thinking. Bosko is briefed on a top-secret operation. Poppy makes a startling discovery. Martian confronts Sami about why she's in London and finds a needle in a haystack, before a heated session with Dr. Blake.

Cast: Michael Fassbender, Jeffrey Wright, Jodie Turner-Smith, Katherine Waterston, Harriet Sansom Harris, John Magaro, Saura Lightfoot-Leon, Andrew Brooke, India Fowler, Reza Brojerdi, Alex Reznik, Richard Gere, Dominic West, Adam Nagaitis, Bilal Hasna, Kurt Egyiawan, Tom Vaughan-Lawlor, Sabrina Wu