I gave this movie 5 even though its directed and produced very well but has this major loop hole..

How Jane (later John) was born for the first ever time? When Jane is daughter for Jane(25) and John(45) (previously Jane).. Where did the first Jane come from?

How did Robertson first find Jane/John or he must have created the killer in the first place then changed his past?? who know this might be it...

I have thought over it but there is no explanation for how did this Jane/John story start?

Help and explain please..

This is my first ever review...