 It could be Dicky Cruyer, his incompetent supervisor - whom Samson despises.It could be the American Bret Rensselaer, who has built his entire career around the work of Brahms Four — and who is spending an inordinate amount of time with Samson's wife, Fiona (also an intelligence officer).It could be Frank Harrington, the 'rezident' (head) of the Berlin field unit.