The Grémillet Sisters #1 - 4

Sarah’s been having strange dreams… a tiny jellyfish, a giant tree, a mysterious forest. But what if it’s all true? With her younger sisters Cassiopeia and Lucille at her side, Sarah, alias Rolling Thunder, will lead the investigation to decipher her mysterious visions. In the process, the Grémillet sisters will stumble on their mother’s hidden past and uncover a long-buried family secret!