Editor's Preface 1. The Context of Online Policy and Legislation; Julia Davidson and Petter Gottschalk 2. Theoretical Context of Online Child Sexual Abuse; Julia Davidson and Stephen Webster 3. The European Online Grooming Project Study Design; Stephen Webster 4. Understanding Online Grooming - Findings from the EOGP Study; Stephen Webster, Julia Davidson and Petter Gottschalk 5. Psychopathology of Online Grooming; Vincenzo Caretti, Adriano Schimmenti and Antonia Bifulco 6. Social Media and Young People; Julie Grove Hills, Antonia Bifulco and Thierry Pham 7. Young Victims Online; Antonia Bifulco and Thierry Pham 8. Implications and Conclusion; Antonia Bifulco, Julia Davidson and Stephen Webster