Dead Air (Chinese: 鬼计; pinyin: Gui Ji) is a 2007 Hong Kong horror film produced by Teddy Chen. The film is the directorial debut of Xavier Lee and the first lead role for AV idol Derek Tsang. The supernatural crime drama also features Leila Tong, Terence Yin, Raymond Wong Ho-yin, Jo Kuk, Wayne Lai, and Susan Tse.