Artifacts (2007)

A group of friends are being killed by their dopplegangers, who appear when a strange noise is heard. Kate figures it out after reviewing video tape of her friend from the night of her death in which her friends double appears, and by seeing her own doppleganger.

Kate has a run in with her ex-boyfriend Mike's double, but figures out it's not Mike and runs away. When she sees the real Mike, she tells him what she suspects. He doesn't believe her at first, but after another of their friends dies and both see the double, Mike is convinced.

A metallic artifact is found under the ribs of all their dead friends, which leads Kate to believe she and Mike are implanted with them as well.

Kate uses the internet to look up bodies implanted with an "artefact" and easily finds just what she needs. This leads to a meeting with the man who wrote the paper on artifacts in bodies. He informs her that there is an experiment going on run by people in high places. How do you react when you are facing yourself? How do you differentiate between whats real and a copy? Well, I'm not sure how having your doppleganger kill you will provide valuable data for research, but then again I didn't set up the research parameters and we never know their thesis.

While the movie did build tension and I got really drawn into the film, the ending had me saying, are you friggin' kidding me?!?! There are too many plot holes for any satisfaction, no resolution or even a hint at a resolution. Also just as a side note, the girl on the dvd cover is not in the movie and no one has crazy yellow eyes or cracked skin either.