While deranged cult leader Jimmy Crystal (Jack O’Connell) wreaks havoc in sequel 28 Years Later: The Bone Temple, Dr. Kelson (Ralph Fiennes) continues his experimentation with the infected Alpha he dubbed Samson (Chi Lewis-Parry).

The unusual connection between the empathetic doctor and his unlikely Rage-infected patient leads to potentially world-changing consequences in the second installment of the trilogy, with Nia...