Books I have really enjoyed over the past year include -
dancing on thorns - rebecca horsfall
miss pettigrew lives for a day - winifred watson
Old favourite authors include jilly cooper, christopher brookmyre, kate atkinson, anita shreve, annie proulx, marion keyes
classics that are sometime considered kids/school books that are still great - what katie did, little women, the catcher in the rye, the prime of miss jean brodie, 1984, the handmaid's tale, to kill a mockingbird, lord of the flies, lord of the rings
If you can give us an idea of what type of book you fancy you might get more specific suggestions