As Augustus learned of Livia's plot against Postumus, she took action which resulted in Tiberius becoming emperor. The situation in the East now threatens Tiberius's position.

Cast: Derek Jacobi, Siân Phillips, Brian Blessed, George Baker, Patrick Stewart, Patricia Quinn, David Robb, John Castle, Carol Gillies, Jonathan Burn, James Bree, Graham Rowe, John Evitts, Alan Thompson, Michael Segal