Ted Dekker books deal with good versus evil in various settings 

Evil Genius by Catherine Jinks. It is the story of a boy who is groomed to be an evil genius by his father, a criminal mastermind. But the boy begins to question...

Birdsong by Sebastian Faulks

Captain Corellei's Mandolin and Birds Without Wings by Louis de Bernieres.

Family Matters by Rohinton Mistry.

Transplant, or Clone by Malcolm Rose books deal with the implications of genetic manipulation.

The Lord of the ring by JRR Tolkein

Oryx and Crake by Margaret Atwood. 

Birds without wings by Louis de Bernieres

Deep Fried by Bernard Beckett

The Boy in the Striped Pyjamas by John Boyne

Miss Peregrines home for peculiar children by Ransome Riggs

The Rules of Survival by Nancy Werlin

The Great Gatsby" - F. Scott Fitzgerald

The wave by Morton Rhue

Big mouth and ugly girl by Joyce Carol Oates