I'm the Fake Detective

I traveled back in time and became a young master in ancient times. My beautiful fiancée and cold and charming mother-in-law were detectives. As soon as I came here, I was asked to investigate the assassination of the princess. I thought my life was already in hell mode. Unexpectedly, King Feng actually put one of the most dangerous cities in the empire into my hands. The whole continent is waiting to see us torn apart by bandits or beasts, but they don't know that the seemingly weak mother-in-law behind me was once the Dark Moon Queen who made the entire continent tremble. When the imperial army came to the city and forced me to hand over my military power, the queen leaned lazily on the throne and chuckled at me: "Good son-in-law, how do you want those flies outside the city to die?"