Michaela questions Ben's developing relationship with Eureka; a new adversarial group suspicious of Ben takes drastic measures to gain answers; Saanvi proves her worth through a scientific breakthrough; Angelina reaches a breaking point.
Tempers flare when bed bugs invade; as Alex cracks, Red lashes out at Piper; Aleida interferes with Daya and Bennett; Caputo gets bad news.
Ellen and Brian decide they won't be able to escape until they've taken Duncan down, so Ellen sneaks away to see a friend of her father's who has previously helped her to solve severe problems in her life.
Several futures hang in the balance as the inmates face and confront their worst nightmares. Life will never be the same again.
The guards get tougher in a bid to turn up prison contraband, and a big, lingering secret is finally revealed.