Bloody Birthday

Bloody Birthday (1981) is a horror directed by Ed Hunt rated 5.9/10.

In 1970, three children are born at the height of a total eclipse. Due to the sun and moon blocking Saturn, which controls emotions, they have become heartless killers ten years later, and are able to escape detection because of their youthful and innocent facades. A boy and his teenage sister become endangered when they stumble onto the bloody truth.