...even if it is lengthy.

In no particular order:

My Antonia or Death Comes for the Archbishop - Willa Cather
The Master and Margarita - Mikhail Bulgakov
The Awakening - Kate Chopin

and my personal favorite classic novel - Middlemarch by George Eliot.

Ok, five books, but that's showing some restraint for me. I'll also second Jon's mention of Howard's End.

PS - Anna Karenina is not a short book.