Simon Said, the first in the Prof Simon Shaw series by Sarah Shaber (lots of alliteration there

), is currently free at Kindle US.
link:
https://www.amazon.com/Simon-Said-Pr.../dp/B004RJ9G0U
And if you like the first one, the other four titles in this series have recently dropped to $0.99 at Kindle US, no idea why or for how long. I'm in a hurry and don't have time for all the individual blurbs and links, but here's a price-ascending link that shows all five - the free first title and the other four.
link:
http://www.amazon.com/gp/search/?sea...price-asc-rank