Bane

Katherine awakes in an underground cell with three other women who all have complete amnesia. The women soon discover they are part of a gruesome experiment with no obvious purpose. That night Jane witnesses the first visit to their cell by the terrifying figure of the blood splattered Surgeon. One by one the Surgeon cuts a four digit number into each woman's skin the exact time he will return to kill them. Is there any way to escape? What is the purpose of the experiment? And who or what is screaming every time the lights go out?