What about the cliché seriel killer/troubled detective plot lines, a-la 'Silence' or 'Seven'. One gruesome seriel murder being tracked by one grizzled and world-warry detective. Because, you know, the FBI is too busy investigating .mp3 file-sharing to have a team of people working on a simple seriel killing case.

But fortunately, the one person that is on the trail always has the specific knowlege to find and know the importance of the one clue that finally reveals the killer's identity... 'caus as you know, if you're in the FBI you must also be an expert in all aspects of forensics.

__________________
I'm like one of those idiot savants...well, except for the savant part.