When Lois leaves for Egypt, Clark gets a new partner: reporter Catherine "Cat" Grant. he soon discovers that she's been targeted by an assassin who never misses.
The season premiere picks up where the finale left off. Lois (Erica Durance) finds Clark's (Tom Welling) lifeless body and removes the blue kryptonite enabling him to heal himself.
In this episode the Kandorians who have been involved in experimenting with humans have let a doctor escape who has evidence that prove aliens inhabit earth.