This workshop introduces a new system for integrating Extensive Reading (ER) and speaking activities for CEFR-B1 level upward. Using ER-based crime stories as the foundation, students prepare and perform classroom Mock Trials with structured role sheets for the judge, prosecutor, defender, defendant, and witness. A trial guide supports students in developing open/closed questioning skills. Participants will also be introduced to a custom GPT students can use before class to better understand the story and rehearse their roles. This AI assistant scaffolds comprehension and oral preparation, helping learners move from reading into fluent, role-based interaction. Even when guilt seems clear, sentencing decisions are not. Mock trials invite critical thinking about motive, age, intent, and appropriate punishment/rehabilitation. We will explore how to adapt existing ER crime stories using crowd-sourced sentencing guidelines and custom GPTs. If possible please read Chapters 1–4 of “Kittens Like Steam Clouds” before attending: https://vivabeppu.wixsite.com/vivabeppu/blog