On 24, why exactly was Jack Bauer's brother killed?

Question

For those of us who have a memory, Jack's father Phillip killed his son Graham to protect some sort of secret. Graham had already confessed to being involved in the previous season's plot of killing the former President, several of Jack's friends and co-workers, and equipping the villians will nerve gas.

Now the season is over and Phillip is dead. So why exactly did Phillip kill Graham again? There was never any explanation I saw on why a father would kill his own son whom he had worked with so closely.

I knew this would be a big problem months ago when it happened, but I always figured the writers would slip something in to justify it.

Unless my memory is faulty, Graham had already copped to everything he could cop to. We already knew at that point that Graham and Phillip were involved in supplying the bombs.

Answer 1

I think Phillip killed Graham because he is a mean s...o...b...!!!!
Maybe, he had other secrets he was keeping!!!!!!!!!
And, for the record, I don't necessarily think that Philip is really dead, I think he got on the Chinese submarine that was coming and took the component with him...I guess we will find out for sure next season!!!!!!!

Answer 2

Simple, Phillip killed Graham to convince Jack that he murdered his brother as to deflect the attention away from himself and also because Philip sensed that Graham was becoming a weak link and jack would eventually discover the truth. It is not for certian that Philip is dead...
Josh shot him,Jack and Josh escaped via chopper and the almost dead Philip might of escaped in the boat before the attacts. We will have to wait for next season.
I hope I awnserd this correctly.
Chloe Fan:)

Answer 3

Graem knew more about the conspiracy and since Jack was able to break him, Phillip killed him before he could be implicated.