在险恶的城市中，测毒小队无畏无惧，勇敢揭示隐藏的毒品真相，守护一方平安。50岁寡妇的生理需要

　　Chemist Dr. Harvey Wiley takes on food manufacturers to banish dangerous substances threatening the health of consumers, laying the groundwork for U.S. consumer protection laws and the creation of the Food and Drug Administration.