After committing a series of multiple murders, a neurologist visits an incarcerated killer, living in exile. She studies him and his brain and discovers the horror that lurks behind his violent impulses.

An ambitious lawyer kills her gardener by mistake, fearing her chances with the law and the impact this will have on her career at a prestigious firm, she turns to her best friend to help her get rid of the body.

As 2 Section prepares to return to Afghanistan, Georgie must decide whether to join them, kicking up difficult memories for her.