Officer Geomancer (Chinese: 八卦神探; Cantonese Yale: baat gwa sàhn taam) is a TVB comedy detective drama produced by Nelson Cheung, starring Johnson Lee and Joey Meng.

Sit Dan Yan (Johnson Lee) is not an ordinary police constable.

His outlandish character often leaves his superior, Che Gwai Fei (Joey Meng), astonished.

When Che Gwai Mei becomes involved in a love triangle with Leung Sing Kau and Tit Leung Chi (Rebecca Zhu), Che Gwai Mei loses control of her emotions.

The culprit's modus operandi evokes Sit Dan Yan's memories of the past, which he has been hiding for many years.