Frank's father arrives at the Gallagher's, much to his displeasure, whilst Veronica feels threatened by Karen's presence when she begins working at the pub.
Prisoner follows a principled young prison officer escorting a dangerous, high-value prisoner to court to testify against his elite crime syndicate. Throughout the journey, their relationship twists and turns, with the stakes escalating as the crime syndicate stops at nothing to track them down.
The series is set inside the bubble of Silicon Valley, amid misguided corporate cultures, moony innovation labs and cutthroat private high schools. It is centered around a rift between a self-appointed “inventor of the future” tech CEO and his self-serving “performance psychologist”, who are engulfed in a scandal sparked by the exploitation of personal data.