Rescued from the gallows in 1850s London, young orphan (and thief) Mary Quinn is surprised to be offered a singular education, instruction in fine manners — and an unusual vocation. Miss Scrimshaw’s Academy for Girls is a cover for an all-female investigative unit called The Agency, and at seventeen, Mary is about to put her training to the test. 

Assuming the guise of a lady’s companion, she must infiltrate a rich merchant’s home in hopes of tracing his missing cargo ships. But the household is full of dangerous deceptions, and there is no one to trust — or is there? Packed with action and suspense, banter and romance, and evoking the gritty backstreets of Victorian London, this breezy mystery debuts a daring young detective who lives by her wits while uncovering secrets — including those of her own past. 

Pay close attention and you might solve this.

On Monday afternoon, five students at Bayview High walk into detention.

Bronwyn, the brain, is Yale-bound and never breaks a rule.

Addy, the beauty, is the picture-perfect homecoming princess.

Nate, the criminal, is already on probation for dealing.

Cooper, the athlete, is the all-star baseball pitcher.

And Simon, the outcast, is the creator of Bayview High's notorious gossip app.

Only, Simon never makes it out of that classroom. Before the end of detention Simon's dead. And according to investigators, his death wasn't an accident. On Monday, he died. But on Tuesday, he'd planned to post juicy reveals about all four of his high-profile classmates, which makes all four of them suspects in his murder. Or are they the perfect patsies for a killer who's still on the loose?

Everyone has secrets, right? What really matters is how far you would go to protect them.

Ellingham Academy is a famous private school in Vermont for the brightest thinkers, inventors, and artists. It was founded by Albert Ellingham, an early twentieth century tycoon, who wanted to make a wonderful place full of riddles, twisting pathways, and gardens. “A place,” he said, “where learning is a game.”

Shortly after the school opened, his wife and daughter were kidnapped. The only real clue was a mocking riddle listing methods of murder, signed with the frightening pseudonym “Truly, Devious.” It became one of the great unsolved crimes of American history.

True-crime aficionado Stevie Bell is set to begin her first year at Ellingham Academy, and she has an ambitious plan: She will solve this cold case. That is, she will solve the case when she gets a grip on her demanding new school life and her housemates: the inventor, the novelist, the actor, the artist, and the jokester. But something strange is happening. Truly Devious makes a surprise return, and death revisits Ellingham Academy. The past has crawled out of its grave. Someone has gotten away with murder.