1. Immersive theatre, immersive experience.- 2. Interactivity and immersion: theoretical approaches.- 3. Interactivity and immersion in The Drowned Man.- 4. Fan interactivity: communicating immersive experience.- 5. Follow the story: narrative and immersion.- 6. Exploring multi-stories: narrative, immersion and chronology.- 7. Play the story: an approach to narrative in immersive theatre.- 8. Environment and site-specificity: space, place and immersion.- 9. Conclusion.