Governor Joy Masterton is disgusted when her new deputy, Lou Stoke turns up for her first day at Larkhall reeking of booze and the worse for wear. A new inmate arrives - Emira Al Jahani, the wife of a suspected terrorist bomber. The girls treat her with contempt, but Natalie discovers that she's a chemistry student and has soon bullied her into constructing a drugs laboratory. The others jump to the conclusion that Emira is planning a chemical attack.