Everything about this movie was good apart from bits of the storyline which didn't add up. Her necklace wouldn't of fallen off just from bending over, it would have been better for it to be pulled off by the victim. Telling them they have the pendant was stupid. Carrying the pendant around with them was stupid, take a photo, call around, email. Telling them that you have a witness oh my gosh... Not using gloves or shoe covers at a crime scene, picking up the evidence with your hand. Allowing people to be at a crime scene, not looking up who the detective Seo was from previous police photos and the list goes on.... I'm in no way a police officer or a detective, but these seem like basics.... Whoever wrote this, didn't think much about the these things. It kind of let the rest of the acting and storyline down.