LaKeith Stanfield as Ed Neeham, an NSA security expert who is tracking Salander. Sylvia Hoeks as Camilla Salander, Lisbeth's estranged twin sister who is responsible for the crimes and corruption. Carlotta von Falkenhayn as Young Camilla Salander Stephen Merchant as Frans Balder Claes Bang Christopher Convery as August Balder Synnøve Macody Lund Vicky Krieps Cameron Britton as Plague, a close associate of Lisbeth — a computer expert to whom she reaches out when she needs assistance.