A serial killer is on the loose. Police officer Jeng and his new rookie female partner are put on the case, but they always seem to be a step or two behind. The deeper they get into the case, the more dangerous it becomes for the people close to them. Will Jeng be able to stop the serial killer before falling deep into madness himself? Andrew Gregson's portrayal of Jeng won him an award for best actor.—Vorachote Sakulsri