Then, like a break in weather, an email arrived. No envelope this time: a single address, no header, no company seal, just the typed words: We observed your stress response on 24/03/16. We would like to understand it better. The message invited her to a lab tasting like lemon disinfectant and fluorescent hope. It promised anonymity and offered a stipend. Hazel read it twice and thought of the triple X: the redaction, the rating, the unknown. She could accept, submit, be a data point among many. Or she could refuse and keep the mystery as something stubborn and private.