Abstract 1. Introduction 2. What intervenes?: Cross-linguistic facts 2.1. Romanian sine 2.2. Chinese ziji 3. An Opaque Domain in anaphoric Dependency 4. Multi-faceted Opacity 4.1. Animate Opacity in Anaphoric Dependency 4.2. Animacy Insulation 4.3. Korean overt and covert anaphors 5. Concluding Remarks References