In Kim Sherwood’s Testament (Riverrun, £14.99; Tablet price £13.49), Eva is mourning the death of her grandfather Joseph Silk (József), a famous painter. A testament comes to light documenting József’s experiences during the Holocaust and the atrocities he endured as a Hungarian Jew. In overlapping narratives, József and his younger brother László’s stories are related alongside Eva’s quest to understand her grandfather’s past. Kim Sherwood interweaves fact and fiction to great effect and explores memory, identity, survivor’s guilt and loss with tremendous skill.