Blue Ruin by Hari Kunzru

Once Jay was tipped for greatness, a rising star of the London art scene. Now, he lives out of his car and earns money delivery groceries to the wealthy of upstate New York, while all around a terrible pandemic rages.  When Jay arrives at a house set in an enormous acreage of woodland, he is shocked to see somebody he thought forever lost to him. Standing on the porch is Alice, a lover from his art school days.

Their relationship was tumultuous and destructive, ultimately ending when she left him for his best friend and fellow artist Rob. Alice and Rob have achieved the riches and success for which Jay once seemed destined. Ashamed and debilitated by the virus that has ravaged his body, Jay hopes she won't recognise him behind his dirty surgical mask.

When she does, however, she invites him to recover on the property, setting in motion a reckoning decades in the making.  Gripping and brilliantly orchestrated, Blue Ruin moves back and forth through time to deliver an extraordinary portrait of an artist as he reunites with his past and confronts the world he once loved and left behind.