At a glance
Children's historical mystery adventure
The Blackthorn Key
Book 1 of the The Blackthorn Key series
In 1665 London, orphan Christopher Rowe relishes his apprenticeship to Benedict Blackthorn, learning to compound medicines, decipher codes, and survive the occasional explosive experiment. A series of murders targeting apothecaries turns his master's cryptic warning and puzzle into matters of life and death. With loyal friend Tom beside him, Christopher follows hidden symbols toward a secret that powerful enemies are determined to possess. Clever and fast-paced, this middle-grade historical mystery suits readers who enjoy ciphers, dangerous chemistry, Restoration London, loyal friendships, and young heroes whose curiosity becomes their best defense.
Apothecary Orange Tonic + Competitive Espresso Martini
Choose your bookseller
Find the Book
Print retailers offer a search when an exact edition is unavailable. Kindle links open a specific edition. Audiobook links may open an edition or a search.
Affiliate disclosure: As an Amazon Associate, Book Bartender earns from qualifying purchases. Bookshop.org links also earn us a commission on qualifying purchases. Your price is not affected. Read the full affiliate disclosure.
No surprises at chapter twelve
Content notes
Murder and death · Children in peril · Explosions and weapons · Some frightening scenes
Alcohol-Free Pour
Apothecary Orange Tonic
Citrus, herbs, and fizz for Christopher’s coded remedies and dangerous experiments.
What you'll need
As an Amazon Associate, we earn from qualifying purchases.How to mix it
- Fill a highball glass with ice. Add orange juice, top with tonic water, stir gently, and garnish with rosemary.
- Garnish: Rosemary sprig.
- Glassware: Highball glass.
We earn a commission from qualifying purchases through these Amazon links, at no extra cost to you.
Highball glass ↗Cocktail Pour · 21+
Competitive Espresso Martini
For adults of legal drinking age. Please drink responsibly.
Espresso and coffee liqueur give this martini a rich kick for the final round.
What you'll need
- 1 1/2 oz vodka
- 1 oz coffee liqueur
- 1 oz freshly brewed espresso, cooled slightly ↗
- 1/4 oz simple syrup ↗
- Ice
Alcohol-shopping links are not shown on children's or young-adult book pages.
How to mix it
- Shake vigorously with ice until well chilled and frothy. Double-strain into a chilled coupe.
- Garnish: 3 coffee beans.
- Glassware: Coupe.
We earn a commission from qualifying purchases through these Amazon links, at no extra cost to you.
Coupe glass ↗Set up the bar cart
Shop the Barware
Find the glasses and tools for your next pour.