In 2008, Wanuri completed her first feature film From A Whisper based on the real life events surrounding the August 7, twin bombings of US Embassies in Nairobi and Dar es Salaam in 1998. The film won 5 awards at the Africa Movie Academy Awards including Best Director and Best Picture. The film went on to win awards including, the Golden Dhow award for Best East African Picture at Zanzibar International Film Festival and Best Film at Kalasha, Kenya Film and TV awards, Best Actor at Tarifa Film Festival and Best Film at Pan African Film Festival, Los Angeles.
Shortly after she completed a documentary about the life of Nobel peace Prize laureate Wangari Maathai entitled For Our Land (2009) for M-Net ‘Great Africans’ Series. In 2009 she wrote and directed a short Science Fiction Film Pumzi that was partially funded by Focus Features (part of NBC universal), Goethe Institut and Changa Moto Fund in Kenya. After playing at Sundance film festival, Pumzi won Best Short at Cannes Independent Film Festival, May 2010 and took Silver at Carthage Film Festival Tunisia, October 2010. Wanuri is now adapting two books into feature length narrative films.