"We have a good number of people searching the sewer, so if he did we'll find it." Without knowing where the original crime scene happened, or where the sewer actually let out, they were in a bit of a limbo until they could find another lead.

"I talked to Conan," she turned back to face Castle. "He said you were welcome to help out with the case. We're low on hands already, so you might even have to do a few interviews. Unless you're too busy, of course."