Antoine Leiris lost his wife Helene in the Bataclan theatre in Paris. His Facebook tribute to his wife and challenge to her killers has since been shared thousands .br Antoine Leiris lost his wife Helene in the Bataclan theatre in Paris. His Facebook tribute to his wife and challenge to her killers has since been shared thousands .br Antoine Leiris lost his wife Helene in the Bataclan theatre in Paris. His Facebook tribute to his wife and challenge to her killers has since been shared thousands .