The main goal of this programme is to bridge among all research areas in GW science, and foster interaction and communication. The programme is organised in three two-week blocks: the first two weeks are dedicated to theoretical aspects of gravitational-wave science, the second two weeks to astrophysics and cosmology, the third two weeks to gravitational-wave detectors and data analysis. Scientific activities during the programme will include a series of lectures at master/PhD level, seminars, coordinated interdisciplinary exchanges, and afternoons dedicated to junior scientists, who will have the opportunity to present their research. The programme will be an occasion to interact with colleagues and students within a convenient and stimulating venue in the center of Paris. The programme will also host the fourth annual meeting of the Groupement de Recherche Ondes Gravitationnelles.