At a glance
The Secret of the Caves
Mystery and suspense
The Secret of the Caves
Book 7 of the The Hardy Boys Mystery Stories series
Frank and Joe Hardy explore caves connected with a mystery involving missing property or suspicious activity. Underground passages create natural hiding places and make the brothers vulnerable when criminals discover their interest. The case requires both outdoor skill and careful clue-following as the Hardys work with information their father’s investigations may also touch. Franklin W. Dixon uses the caves for classic juvenile-adventure suspense, turning geology and hidden spaces into the setting for a crime that depends on remaining out of sight.
Paired for this story
Jump to the pours ↓Secret Garden Cooler + 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
Crime/danger and peril · Mild frightening/intense material
Alcohol-Free Pour
Secret Garden Cooler
A bright, refreshing sip suits an evening of clues and clever sleuthing.
What you'll need
As an Amazon Associate, we earn from qualifying purchases.How to mix it
- Gently muddle cucumber and mint with lime juice. Add ice, top with sparkling water, and stir.
- Garnish: Cucumber ribbon and mint sprig.
- Glassware: Highball glass.
Shop glassware & tools
We earn a commission from qualifying purchases through these Amazon links, at no extra cost to you.
Highball glass ↗Muddler ↗Cocktail Pour · 21+
Competitive Espresso Martini
For adults of legal drinking age. Please drink responsibly.
Rich coffee suits an evening of clues and clever sleuthing.
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
Shop the spirits 21+Search Total Wine for Vodka · 21+ ↗Search Total Wine for Coffee liqueur · 21+ ↗
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.
Shop glassware & tools
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.