10 Scariest Horror Movie Twins
4. Holland And Niles Perry - The Other (1972)
Twin boys, sensible Niles and mischievous Holland are cared for by their Russian grandmother Ada on her farm after the death of their father the previous year, with their grieving mother refusing to leave her room.
Ada teaches Niles a 'game' where he learns to astrally-project his mind into other beings, but unfortunately Niles isn't very responsible with his new power, and with Holland's increasingly evil influence, soon grisly fates start to befall anyone who the twins take a disliking to.
It is horrifyingly made clear how scary such a power is in the hands of someone who is still too young to have developed a moral compass.
The twist to the movie is fantastically delivered, with it being revealed that Holland has been dead since he fell down a well on their birthday the previous year, and Niles used his ability to speak to his brother just before he died, keeping him 'alive' in his mind ever since.
Niles wrestles with his brother's influence, but he ultimately proves unstoppable, with his family, including his mother and grandmother all suffering as he completely loses himself to him.