In 1868, with his army officer father suddenly posted to India, and his mother mysteriously "unwell," fourteen-year-old Sherlock Holmes is sent to stay with his eccentric uncle and aunt in their vast house in Hampshire, where he uncovers his first murder and a diabolical villain.

Ivy, Mateo, and Cal used to be close. Now all they have in common is Carlton High and the beginning of a very bad day. When Cal pulls into campus late for class and runs into Ivy and Mateo, they decide to ditch and go into the city. Just the three of them, like old times. Until they spot another Carlton High student skipping school-- and follow him to the scene of his own murder. Their day just turned deadly. And it's about to get worse. Mateo, and...

In the late 1950s in the Midwest, a serial killer has been draining their victims of blood, leaving them otherwise undisturbed in their cars and homes. When a fifteen-year-old girl is found covered in blood amidst the latest corpses, she confides only in the sheriff's son but her story is unbelievable at best.

Somebody in the town of Rock Bay has posted a "share this post and your own deepest death fear" meme and it seems that everybody but Izzy has shared the creepy graphic; nobody knows who posted it, but soon people start dying, and it seems that the meme is part of a plot to extract revenge on the high school students of Rock Bay--Izzy is determined to investigate, but what she uncovers is her own worst nightmare.

Alberto is an undocumented immigrant from Mexico, living in New York City, and is now suspected of a terrible crime; his friend Grace is a top student with every advantage, and she is determined to prove Alberto's innocence.