Synopsis: The Battery Mage (working title)

Freelancing detective Sasha Tjader gets a call one morning that someone - or something - has arrived from a parallel dimension. Again.
And Sasha should find out who or what that is, preferably until yesterday, lest the whole of Shadowspar is destroyed.
Unfortunately, some people could care less about the city...or the laws.

So yeah.
I don't want to spoiler here xP

Possibly a steampunk setting, i.e. I'm attempting that but I've never actually read a steampunk book so it will be my own interpretation.
WARNING: will most probably contain time travel, at least one epic battle, dead people and grease.