 He refuses to believe that an agent, Victor Perez, is required to be appointed, to whom ten percent of the contract price must be paid and that this percentage is actually the minister's cut.He visits the minister and insists on knowing the full details and simply refuses to believe any version of the minister, who tells him that Victor's father once, at great personal risk, saved an injured soldier, which was why the government gives him the privileges of getting money from tenders.Later, when Graham does not understand, the Minister realizes that Sir Hamish is not a man who can do business the Mexican way and sends him out.