Her fearful symmetry

Summary: When Elspeth Noblin dies of cancer, she leaves her London apartment to her twin nieces, Julia and Valentina. These two American girls never met their English aunt, their mother's twin sister. Julia and Valentina are semi-normal American teenagers -- with seemingly little interest in college, finding jobs, or anything outside their cozy home in the suburbs of Chicago, and with an abnormally intense attachment to one another. The girls move to Elspeth's flat, which borders Highgate Cemetery in London. They come to know the building's other residents. There is Martin, a brilliant and charming crossword puzzle setter suffering from Obsessive Compulsive Disorder; Marjike, Martin's devoted but trapped wife; and Robert, Elspeth's elusive lover, a scholar of the cemetery. As the girls become embroiled in their neighbors' fraying lives, they also discover that much is still alive in Highgate, including -- perhaps -- their deceased aunt, who can't seem to leave life behind.-- From publisher description.