For about the first two-thirds of its' running time, Murderer is one of the most boring "thrillers" you would ever have the displeasure of sitting through, unless you're a fan of watching Aaron Kwok act, which mostly means portraying various emotions, all of which seemingly point to him being constipated. But then a mind-boggingly illogical twist is introduced which turns Murderer into one of the better comedies you're likely to come across this year, albeit a totally unintentional one.