It's not that far-fetched, seeing as how there have been real-life stories about people posing as high school students even though they were really much older. But, true, seems like it could be relatively easy to do, as long as you knew how to fake the documents. Hmmm.
Glad they're not letting the cabbie killer thing die (no pun intended).
Didn't they previously focus on two cases per episode? Seems like the last couple of episodes the whole team has been working on the same case. I wonder if that has to do with the writers' strike (ie with them having less time to come up with stories, making it easier to just focus on one case per episode)?