Hope you enjoyed that, and well done ramblingfancy, who more or less got the right answer – Return of the Native is the odd one out, for reasons which will become clear when you see the books’ opening lines…
‘Whan that Aprille with his shoures soote’ – The Canterbury Tales
‘A Saturday afternoon in November[…]’ – The Return of the Native
‘April is the cruellest month’ – The Waste Land
‘It was a bright cold day in April, and the clocks were striking thirteen’ – Ninety Eighty-Four
Thanks for all your ingenious guesses!