An exec from a rival company covertly offers valuable secrets, so Ben, Elizabeth, and Julian plan a defection. Laura responds to a domestic betrayal. In the past, Aaron and Elena meet again.

Ben improvises when Roger closes in on the truth about Elena, Laura takes her therapy to the next level, Elizabeth pressures Ben to finish a vital project and Julian aids a friend in need.

On a mission of mercy, Laura relives the harrowing events eight years ago that forever changed her life and her bonds with Elizabeth and Julian. Ben and Theo consider their next move after a sudden event.

After his strategy misfires, Ben's backup plan risks his life and Elena's rescue. Laura bypasses company policy to save a cardiac patient. Julian accepts Ben's help to investigate a murder.

Ben's ongoing investigation leads to a shock. Laura's child patient reveals sobering facts about life outside the wall. Elizabeth and Julian finally enact their bold plan against Inazagi.

Ben's mission reaches a critical juncture, Laura finds the thief, Theo ventures inside the wall, Elizabeth and Laura reckon with the fate of the clinic, and Julian tracks a killer.