Flushed

[Disclaimer: Do not read this if you haven't finished reading A Face In The Dark(Dark Trilogy Part-1)]

Due to some intergalactic error or who might know a well planned penetration, a murderer escapes to another universe. He gets on a killing streak before he encounters his own clone.
What will happen when the clone figures out that the man is an evil side of him? Will he be able to close the DOOR? And what if he somehow got into the other universe?