The Valley of Ghosts by Edgar Wallace

'My dear Macleod' (wrote an attache at the American Embassy)--'I do not know Mrs Crafton-Bonsor personally, but I have heard quite a lot about her. As you rightly surmise, Crafton-Bonsor was not a United States Senator. In this country you have what you call 'courtesy titles', 'Senator' may be described in in this case as a discourtesy title! The original name of Crafton-Bonsor is difficult to unearth. He was called variously 'Mike' and 'Murphy' by old associates, but he was 'Bonsor' Murphy and 'Grafter' Bonsor, and from these two appellations he probably arrived at Crafton-Bonsor. He had some sort of political pull, and in his latter days was universally known as 'the Senator'. He died immensely rich, and his widow inherited every cent.'

Andy read the letter to Stella Nelson the first time they were alone.