S01 Special: My Hero Christmas
6x07: Top of the Table
6x05: Not for Prophet
6x03: My Kingdom for a Cat
5x10: Night Fever
5x09: Big Bother
5x07: Fear and Clothing
5x06: Brain Drain
5x05: Nothing to Hide
5x04: Cassie Come Home
5x02: Illegal Aliens
5x01: The Foresight Saga
4x10: Time and Time Again
4x09: The Family Way