SOME IMPORTANT CLUES FOR YOU:

The Count had not known that Albert was intertwined with the relative of another of his targets of revenge, and so views this connection as a means by which he (the Count) might come closer to Danglars, and perhaps also to Villefort, who is living in Paris as well. Importantly, Morrel notes that Thomson and French is the firm to which he and his family attribute their salvation, but Morrel is unable to recognize the Count as the envoy from that very same firm – as the Count's identity has been altered substantially enough to make the drawing of this connection impossible for the young man, who only saw the envoy for a short time many years ago.