Toby's Room by Pat Barker

Award-winning author Pat Barker (The Regeneration Trilogy) returns to the First World War for a follow-up to her 2007 novel Life Class. When Toby dies while in uniform and no one will tell her exactly how, his sister Elinor becomes obsessed with the story behind his death — and determined to close the door on the secret they shared before he went to the front.

Toby's Room, Pat Barker, $27.