As we stood by the vent, the head housekeeper, Mrs Gable, accidentally dropped a large stack of fresh linens and appeared absolutely terrified. After I gently calmed her nerves, she tearfully confessed that she recognized the strange odor but had been forced into silence. She explained that eighteen months prior, right when the boys first showed signs of illness, Dr Perry brought in unauthorized private contractors over a weekend. They installed a secondary filter mechanism inside the ductwork, which the doctor falsely claimed was an advanced therapeutic mist to eliminate allergens. He coerced her into secrecy by threatening her employment and falsely stating that any interference with the climate cycle would severely harm the children. However, her conscience prompted her to retrieve and hide three discarded glass vials bearing alarming chemical warning labels that she found in an electrical closet. When Thomas reached for his phone to check the estate network, she frantically warned him that the doctor had configured the system to send an immediate alert to his personal device if anyone altered the ventilation settings.
