Strange beings searching for something is hardly unusual in the city of Nexi. When they intersect with a murder Rax is investigating, he can't ignore them, leading him to an unsettling new world, and a theft that may not even have happened yet.
Eighth in the Tales of the Thief-City series. An 11,000 word novelette.
You can sample or buy this at Smashwords.com
Also available at Amazon.com, Amazon.co.uk.