I’ve finally figured it out: this is a buddy cop story.
Wait wait wait wait wait—it makes total sense! Think about it. Laurence is the by-the-book, hardnosed detective who has been on the job for years when, one day, out of the blue, this smartass rookie with a talent for learning languages and blowing hot air waltzes into his life. The two become partners and start working cases together, and Temeraire keeps getting Laurence in…