Le gardien invisible

Movie starts, a teenager girl naked body is found beside a river . The police assumes,some kind of religious act, as the the body was throughly washed and a cookie is placed on the lower private part. As the time passes,there are more girls who are disappearing and the next day, they are found dead on the same forest. The female police who has a traumatic past, set out to find the cookie's ingredients and find the shop. Surprisingly,her sister has a cookie shop. She asked her for the list of shops and ingredients however,she provided her with wrong information. What's her motive?

The cops are searching and they found a hundred of bones in a cave, on the other hand, the chief has found out about the involvement of her family and pushed her out of the case. Will she able to find the motive behind all these murders?

I loved it from starting, it compelling. But, as the time passes, it felt so absurd. Ending could have been better but it was totally messed.