Gianrico Carofiglio

"Antonio is a boy on the cusp of adulthood. His father, once a brilliant mathematician, hasn't figured much in his life since the divorce from his mother. But then Antonio is diagnosed with epilepsy and a hope for a cure takes father and son to a doctor in Marseille, where French old world charm meets a modern city of bohemians. There they are advised to spend two days and two nights together without sleep in order to trigger - and resolve the medication...