Taliesin Affair

Boarding school can be hell - sometimes it can be MURDER
Maliha Anderson did not enjoy life in the British boarding school, but finding the school bully murdered certainly made it more interesting.
And when the police chose the wrong person as the most likely suspect, Maliha decides to investigate and reveal the true culprit.
But, as the bodies mount up, the murder becomes a plot, and the plot becomes a conspiracy aimed at the heart of the British Empire.
When Maliha herself comes under suspicion, she realises her only chance lies in a dangerous gambit that risks the lives of herself and the people she's come to know.
This is Maliha Anderson's first case and it can be read at any point in the series (except perhaps between books 5 and 6).