Teen Sherlock battles a monstrous adversary on a mission to Ireland with his brilliant brother, Mycroft.
Servants and some of the guests are frightened but who--or what?--has terrified them so much that nobody will speak out? Young Sherlock must bring.
At the castle where the medium is demonstrating his "gift," Sherlock finds a household in turmoil.
Young Sherlock is thrown into a tangled web involving a spiritualist whose powers have attracted the attention of governments around the world.
Teen Sherlock battles a monstrous adversary on a mission to Ireland with his brilliant brother, Mycroft