Frank grapples with haunting memories from his past and his erratic behavior gets called into question, putting his team’s loyalty to the test. Meanwhile, The Hill receives a special visitor in famed physicist Neils Bohr, whose sudden arrival sparks curiosity among the scientists – and Charlie is assigned to escort him around the compound. Elsewhere, Callie plots an escape.
Elenco: John Benjamin Hickey , Olivia Williams , Ashley Zukerman , Rachel Brosnahan , Daniel Stern , Harry Lloyd , Katja Herbers , Michael Chernus , Christopher Denham , Alexia Fast .