Just a quick appearance alert (unconfirmed):
If you were planning on tuning in: there is no episode #22.
NBC cut the order to 21 episodes earlier this year, so the season ends on Wednesday, April 8, with episode #21, “One.”
Here is the synopsis:
In the season two finale episode Crews (Damian Lewis) must locate his partner Reese (Sarah Shahi) who has gone missing while on loan to the F.B.I. Her disappearance is directly tied to Crews and he will do whatever it takes to get her back. In the events that transpire, shocking details about the conspiracy against Crews will be revealed. Gabrielle Reese, Donal Logue, Brent Sexton and Adam Arkin also star.
I haven’t been able to find any info on guest appearances for the episode, but the casting call at SpoilerTV mentions a Russian mob boss and, as far as I can remember, there has only been one important one on the show so far.
NBC’s site isn’t particularly helpful, but we’ll probably know more after tomorrow’s episode, when the teaser shows up. If you wanna refresh your memory, here are two old clips from the show’s highlights section at NBC.com (I have no idea what is in the second one since it’s only available in the U.S. so if it doesn’t belong here, please let me know):
While I’m at it, here is the preview for tomorrow’s episode (2×20, “Initiative 38″), which airs at 9PM/8PMc on NBC: