When her best friend Lydia disappears, Piper Sail goes searching for answers in the dark underbelly of 1924 Chicago, uncovering deep corruption that may lead back to her affluent neighborhood.

When scary strangers appear at the Monroes' overnight campsite, Chester the cat tries to convince the family's two dogs that foul play is intended.

Molly Mavity and Pepper Yusef are dealing with their own personal tragedies when they are tasked by an anonymous person with solving the decades-old murder of Ava Dryman, an East German teenager whose diary was published after her death.

Marzana and her best friend, Nialla, are bored. In a city where normal rules don't apply, it seems that adventure should be everywhere, yet nothing exciting ever happens to them. Nothing, that is, until Marzana's parents are recruited to help solve a kidnapping that makes no sense. This could be the excitement Marzana and Nialla have been looking for-if they can crack the case without getting caught meddling. They gather a group of kid detectives...

"Summer 1958. A gruesome killer plagues the Midwest, leaving behind a trail of bodies completely drained of blood"--

Chester the cat is more than ever convinced that Bunnicula is a vampire when there is a harvest of white vegetables on the morning after the night that Bunnicula was probably wandering through the neighborhood.

Reynie, Kate, Sticky, and Constance, all graduates of the Learning Institute for the Very Enlightened and members of the Benedict Society, embark on a scavenger hunt that turns into a desperate search for the missing Mr. Benedict.