The Caesars (Miniseries 1968) | Sejanus (Episode 4)

Episode 4: Retreating to Capri, Tiberius trusts Praetorian Guard captain Sejanus to run Rome but finds the latter is using his post to eliminate rivals in the Agrippina party. The Emperor devises Sejanus' precipitous downfall.

Episode 5: https://rumble.com/v4w1vz6-the-caesars-miniseries-1968-caligula-episode-5.html