I, Claudius Lesson Plan

What happens between Sejanus and Castor? How does Livia get involved? Does she have faith in Castor?

Sejanus goes to congratulate Castor on being named Protector of the People, and Castor tell him to leave. Livilla, Castor's wife, comes to Sejanus's defense and Castor realizes there is something going on between the two of them. Castor makes to fight Sejanus but Sejanus refuses to put up his hands, so Castor slaps him across the face and yells at him to leave. Livilla follows him out. Sejanus then runs to Tiberius and feeds him a lie about Castor striking him and saying he can do whatever he wants now. Livilla the next day then complains that Castor beat her and...