A Little Matter by Neil A. Hogan
Science Fiction Weekly #20
When Julie sees the Guider striding towards her, she knows something is up.
And when he invites her to a safe house to reveal that he had already known about her discovery, long before she had made it, she soon discovers that all is not as it seems.
With the dark matter having left the Oort Cloud, and now heading towards the inner Solar System, it is up to Julie to decide what to do next.
But she has absolutely no idea what that could be.
Could this mean the end of the human race?
A Little Matter is #20 in the Science Fiction Weekly short reads series. A short story of approximately 4600 words.