The Woman in the Fifth, by Douglas Kennedy (arrow books, £6.99)
Following an 'incident' at the American college where he taught, Harry Ricks escapes to Paris to write a novel. The story unfolds amidst the squalor and underworld of the Turkish district of Paris as Harry sinks to rock-bottom.
Then he meets the elegant, smouldering Margit, a cultured Hungarian who seems to read his innermost thoughts, and Harry becomes inescapably entangled.
So far, this is almost predictable, but Kennedy surprises us until our disbelief is challenged to the extreme.
I can't say more- you have to read it for yourself. Love it, hate it, you won't want to put it down.