Idiom of fear

I was shaking  like a Leaf when I thought i heard someone in my basement 

When I sleep in my bed and I hear something knock on my window I shaking like a leaf

When I was in my basement I was scared stiff so I couldn't go up the stairs 

On the night when I  was in my bed and heard some scary voice upstairs I was scared stiff so i just lying there.

It sends shivers up and down my spine when I see one man with blood in his face and a knife in his hand.

When I was in the forest and saw some dark shadow it sends shivers up and down my spine.