Tiberius

Upon Augustus's death, Tiberius became the second Roman emperor. He was adopted by Augustus and had been given tribunician power and imperium, ensuring a smooth transition of power.

Tiberius's adopted son and heir Germanicus died under suspicious circumstances in Syria. Tiberius was suspected of involvement, leading to public grief and political tension.

Tiberius withdrew from Rome to the island of Capri, leaving administration to the Praetorian Prefect Sejanus. This retreat led to a power vacuum and Sejanus's eventual execution for conspiracy.

Tiberius ordered the arrest and execution of Sejanus, his powerful Praetorian Prefect, for plotting against him. Sejanus's family and supporters were also purged, restoring Tiberius's control.

After Sejanus's fall, Tiberius conducted a series of treason trials and executions, targeting senators and equestrians. Many were condemned on flimsy charges, creating an atmosphere of fear.