Shrieks are the heralds of The Other. When the third Shriek is drawn, they call to The Other, advancing it even if there are Lit Prisoners in the Hollow. Because of their endless screaming, the first two Shrieks persist as obstacles within the maze even when not illuminated. While a Shriek is present, Prisoners can no longer move onto that space. However, Shrieks do NOT block other monsters’ attacks or interfere with any other monster's line of sight.