A White Rose in Bloom Vol 4

From the Seven Seas Entertainment edition

SCANDAL IN THE SCHOOLYARD Suspicions spread throughout the girls’ school after several small items go missing. Even worse, some people suspect Ruby is the culprit! Just as things seem about to spiral out of control, the dashing detective Steph takes on the case! Can Steph solve the mystery and clear Ruby’s name?

Source: Penguin Random House API