Oliver Haddo is the name of the necromancer in W. Somerset Maugham’s novel THE MAGICIAN(1907), a character inspired by Maugham’s acquaintance with the notorious British occultist, Aleister Crowley (1875-1947).
Just a bit of Magick! [note the spelling] is how G. L. Pease characterises this mélange, and whether it conjures up the gracious living of one of the loveliest houses in Scotland, or the transfigured beauty of the Canadian West, or merely the thelemic prestidigitations of an illusionist, you will agree that, when he gets around to choosing allusive titles, Mr Pease doesn’t kid around.