I missed all the november episodes...somehow Kromartie is John Henry (and likes bionicles) and there's an asian woman with the good guys.
Actually, beyond that I don't think I missed much.
Trip dies on every show he appears.
You've missed roughly eight episodes (and 2.5 is going to focus heavily on them).
Here are the basics (starting with Mister Ferguson is Ill Today).
- Cromartie was destroyed by the Connors at a church in Mexico with the assistance of James Ellison. After the Connors buried him Ellison snuck back over the border and recovered the body.
- Ellison delivered Cromartie's deactivated body to Catherine Weaver in the following episode. John is revealed to be suicidal in the same episode, but he claims to have forgot to check to see if the 9mm was loaded. Sarah entered into counseling along with John because John wouldn't talk to her anymore. John also grew closer to Riley.
- Derek was revealed to have been tortured by a man named Charles Fischer in the future, but has no memory of it. Jesse Flores - a woman he had a relationship with - is the woman who came back. She is an Australian member of the Resistance with a plan of her own (unrevealed). They realized there are alternate timelines intersecting with that of the show.
- Sarah and Cameron pursued the Three Dots from Sarah's dreams trying to tie them with Cyberdyne/Skynet. They went to Dakara systems but this was a red herring.
- Ellison was introduced to John Henry by Catherine Weaver. John Henry killed the psychiatrist who was working on his development. Ellison took on this task.
- Riley was revealed to be from the future. She is working with Jesse on trying to keep John and Cameron apart.
- Cameron was described as having an interest in military history. She averted a Skynet plot to assassinate the Governor of California.
- The Connors rescued another family that Skynet wanted dead. The mother was pregnant with a girl would would mean the survival of the human race because she was immune to a Skynet bioweapon. The mother was killed during delivery and her daughter took the baby and fled.
- We learned Derek was suicidal in the future after learning about Kyle's being MIA. We also learned how he met Jesse.
- John nearly killed a high school classmate while at a party because he tried to hurt Riley.
- Sarah's quest for the three dots took her to a UFO convention where she met a woman who was a man who was pretending to be a woman. She learned that the man/woman was working on a secret project.
- Riley attempted suicide.
- Sarah was shot after infiltrating the base. She killed the man who shot her and crawled out of the building. While she was laying there she watched a Skynet Hunter Killer fly overhead.