The Best of Both Worlds, Part II was definitely part of Season 4, and wasn't even written until two months after the first part aired. CBS-D will be doing the FX for both episodes. I remember reading that the same FX house will handle the two-part episodes spanning seasons, to maintain consistency. So, whoever replaces HTV Illuminate on Season 4 will do both parts of Redemption, CBS-D will do Time's Arrow, etc.
1/10/13 at 12:27pm