As far as 24 goes, the following can hardly be "spoilers." The are "inevitables."
1. Someone good turns out to be bad.
2. Someone bad turns out to be good, or worse.
3. Someone Jack likes gets killed.
4. Someone wearing red gets killed.
5. Jack gets arrested or killed, but comes back.

4. Someone wearing red gets killed.
Wrong show I think.
6. Jack will get some totally assinine phone call from daughter/girlfriend/_______ that boils down to "I know you're trying to save the world, but would you pick up a gallon of milk and a loaf of bread while you're out. And oh, do you still love me?"