This is book 6 of the Peter Grant series.
I really enjoyed this book. I'm unsure why I enjoyed this one more than the others, and I enjoyed the others. Maybe the plot was more action, less internal thinking? Unsure.
This one has Peter tracking down the drugs involved in the death of a teen in an expensive, and empty, unit of One Hyde Park. A child of a river is involved, which said river would prefer not disclosed (doesn't happen). We also learn of another pocket of leftover magic pracitioners, passed down from mother to daughter for generations.
And there's search of the Third Principia, Newton's tome on magic. Oh, and the introduction of Guleed, a female Muslim cop who does just fine.
I will probably read the book again in a few years, and realize why I like this one more than the others. In the meantime, this is a "if you're reading the series, keep reading, this is a fun one."
I recommend the series in general. Start with Midnight Riot.
I waited about a minute, just so I could claim I’d waited five, and then headed back up the garden.
Olivia glanced at the picture, then sideways at her mother, and I saw her make the wrong decision. But, before I could say anything, she opened her mouth and stuck her future in it.
Guleed always knew how to keep her mouth shut, and had this mad way of just fading into the background whenever she wanted to. Well, we all have our ways of dealing with difficulties — mine is to ask stupid questions.