The letter to Gilbert was only for the purpose of showing that Wynant had a key to the girl's apartment, and sending Gilbert there was only a way of making sure that he'd fall into the hands of the police, who'd squeeze him and not let him keep the information about the letter and the key to himself.
Gilberti bidalitako gutunak Wynantek neskaren apartamentuko giltza bazuela erakusteko asmo hutsa zuen, eta Gilbert hara bidaltzea berriz giltza poliziaren eskutan eroriko zela ziurtatzeko bide bakarra zen; poliziak hitz egin araziko zion eta ez zion utziko gutuna eta giltzaren informazioa berarentzat gordetzen.