But I found a rare-coin exchange in the city where a whole set of marks was sold this morning. Let me guess, the seller was Ulrich Kohl. Correct. He used the store's phone, waited for an answer, hung up. I traced the call to that address in the West Village -- apartment 4-A. Finch, we're too late. Kohl called to make sure he was home. He was interrogated. I'm going through more of these records. Kohl was part of a four man team. He shared trigger duties with a team leader named Steiller. They were backed by a document forger named Wernick... And they reported to a case officer named Hauffe for orders. So who's this dead guy?