Soul of a Witch (Book 11)

In book 11 of the Detective Marcella mystery series, a simple burglary escalates into murder when a witness turns up dead at the circus. With few leads and ample suspects, it's all Tony can do to solve the case before the circus jumps. Complicating matters is Lilith, who suspects something nefarious has been harassing her ailing grandmother, and demands that Tony devote more time looking into the matter before it's too late.