Forest of Death (film)

Forest of Death also known as Sum yuen is a 2007 Hong Kong horror film directed and cowritten by Danny Pang.

Has investigation leads her to botanist Shum ShuHoi Ekin Cheng, who has been experimenting with plants from the forest. Shums girlfriend, May Rain Li, feigns interest in the forest to gain information for a tabloid television show she works for.Shums experiments reveal that the plants can act as witnesses in the murder case, and sets up a reenactment of the crime in the forest, where the plants will act as lie detectors. ........

Source: Wikipedia