Sum yuen (Forest of Death) (2007)

In a mysterious forest in Thailand, many suicidal youths disappear and rescue teams can not find the way out even with compass. The ambitious reporter May is making sensationalist journalism exploring the deaths in the forest. Her boyfriend and botanist Shun Shu-hoi is developing a means of communication with plants. Meanwhile, Detective C. C. Ha is investigating the rape and death of a woman and the main suspect is Patrick Wong.