Downpour indoors.

A Helen Magnus and Tenth Doctor fan-fiction.
When the Sanctuary is faced with a mysterious indoor rain cloud, Helen Magnus attempts to find the solution to the problem, only to be stopped in her tracks by a strange amnesiac. The man goes by the name John Smith. His eccentric personality along with his wit and humor captivate Helen but her lack of knowledge on him makes her uncomfortable. He doesn't even know who he is, or was.