See: BLOOD RUNS COLD.
You are chilled or shivering from great fright or horror; you are terrified or horrified. - Usually used with a possessive. * /The horror movie made the children's blood run cold./ * /Mary's blood froze when she had to walk through the cemetery at night./ * /Oscar's blood turned to ice when he saw the shadow pass by outside the window./ Compare: HAIR STAND ON END, THE CREEPS.