Replicas had a good idea to start with. The story has many holes in it. Almost everything takes shortcuts. The science, the absence of 4 persons for 17 days, the police, the bad guys. The acting is pretty ordinary. The best performances comes from the youngest actors. The plot's big revelation comes totally flat. I give it 48%. The kind of film you will forget tomorrow. That's why I am writing this review...before I forget about it.