Handful of Skulls — A.L. Kessler

When Abigail and Liz are assigned a missing person case, things start to get a little weird. Their search takes them back to Abigail's old stomping grounds, the PIB Academy. With time moving against them, they have to discover the identity and the secrets of the one man who oversees their entire branch. Boss Man.But the case is not without its challenges, and old enemies are starting to threaten revenge. With an investigation into the disappearance of Agent Yorkinson and the looming threat of Samuel, Levi is forced to make some changes that will upend Abigail's life forever.