Demelza & the Spectre Detectors

Read Demelza & the Spectre Detectors Storyline:

Demelza loves science, but she's also inherited a distinctly un-scientific skill: Spectre Detecting—summoning the ghosts of the dead. When Grandma is kidnapped by a mysterious villain, she knows Spectre Detecting has something to do with it. Can Demelza solve the deadly mystery?