1. Market investigations in the EU: A road map Massimo Motta, Martin Peitz, and Heike Schweitzer; 2. Intervention triggers and underlying theories of harm Massimo Motta and Martin Peitz; 3. A European market investigation: Institutional set up and procedural design Heike Schweitzer; 4. The integration of wide and narrow market investigations in EU economic law Pierre Larouch and Alexandre de Streel; 5. Market investigations in the UK and beyond Richard Whish; 6. Market inquiries in South Africa: Meeting big expectations? Trembinkosi Bonakele, Reena das Nair, and Simon Roberts; 7. An Economic evaluation of the EC's proposed “New competition tool” Gregory Crawford, Patrick Rey, and Monika Schnitzer; 8. Market investigations for digital platforms: Panacea or complement? Amelia Fletcher.