The Sleepwalkers - Christopher Clark

The moments that it took Gavrilo Princip to step forward to the stalled car and shoot dead Franz Ferdinand and his wife were perhaps the most fateful of the modern era. An act of terrorism of staggering efficiency, it fulfilled its every aim: it would liberate Bosnia from Habsburg rule and it created a powerful new Serbia, but it also brought down four great empires, killed millions of men and destroyed a civilization. What made a seemingly prosperous and complacent Europe so vulnerable to the impact of this assassination?

In The Sleepwalkers Christopher Clark retells the story of the outbreak of the First World War and its causes. Above all, it shows how the failure to understand the seriousness of the chaotic, near genocidal fighting in the Balkans would drag Europe into catastrophe.

Candide - Voltaire

Brought up in the household of a powerful Baron, Candide is an open-minded young man, whose tutor, Pangloss, has instilled in him the belief that 'all is for the best'. But when his love for the Baron's rosy-cheeked daughter is discovered, Candide is cast out to make his own way in the world. And so he and his various companions begin a breathless tour of Europe, South America and Asia, as an outrageous series of disasters befall them - earthquakes, syphilis, a brush with the Inquisition, murder - sorely testing the young hero's optimism.

The Invisible Ones - Stef Penney

Rose Janko is missing. It has been seven years since she disappeared, and nobody said a word. Now, following the death of his wife, her father Leon feels compelled to find her. Rumour had it she ran off when her baby boy was born with the family's genetic disorder. Leon is not so sure. He wants to know the truth and he hires a private investigator to discover it - Ray Lovell.

Ray starts to delve deeper, but his investigation is hampered by the very people who ought to be helping him - the Jankos. He cannot understand their reluctance to help.

Why don't they want to find Rose Janko?