sentences:  At Coulqouhoun's request, Henry checks his collection again, and discovers that a second gun of the same calibre is missing.Colquohoun shows him the gun found in Veronica's handbag, and Henry confirms that it is one and the same gun.Colquohoun then questions Gudgeon about Doris' earlier statement; Gudgeon confirms the event, saying he was simply up (having found the gun laying out), and had simply forgotten the incident.