The Shadows build a complex on the surface to accommodate those humans who agreed to assist the Shadows .
Others who refuse , like Anna Sheridan , are either killed outright , or taken and plugged into Shadow ships to act as central processor units .
The Shadows build a complex on the surface to accommodate those humans who agreed to assist the Shadow .
Others who refuse , like Anna Sheridan , are either killed outright , or taken and plugged into Shadow ships to act as central processor units .