With Tiberius retired to Capri, Sejanus plans to tighten his grip on Rome and divorces his wife so he can marry Livilla. But he also has powerful enemies and his attempts to consolidate power set in motion a bloody chain of events.

Cast: Derek Jacobi, Siân Phillips, George Baker, Margaret Tyzack, John Hurt, Patrick Stewart, Isabel Dean, Fiona Walker, Patricia Quinn, Kevin McNally, James Faulkner, Edward Jewesbury, Aubrey Richards, Kevin Stoney, Peter Williams