The Coscorrón Sisters: New Adventures, International Success & a Bold New Look

Just in time for its international debut at the Bologna Children’s Book Fair, The Coscorrón Sisters return with new adventures, a fresh visual look, and a growing global footprint.

This Middle Grade cozy mystery series offers a hilariously original premise: three elderly sisters running a private investigation agency, and proving that solving crimes doesn’t require silence, discretion, or modern technology. Quite the opposite. When Ascensión, Carmen, and Rosalía are on the case, things get loud.

Written by Anna Cabeza, the series follows the sisters as they rely on boundless curiosity, life experience, and an unshakable bond to crack every mystery. Their old-school detective skills lead to absurd situations and clever twists, always infused with warmth, wordplay, and humor. Each title stands alone, making the series accessible and easy to enter for young readers who love humorous mysteries with heart.

Illustration plays a key role in the series’ charm. Originally illustrated by Toni Batllori, the legendary cartoonist from La Vanguardia, the books are now illustrated by Gustavo Roldán, who has seamlessly taken over the visual world of the sisters. Roldán preserves the humor and expressiveness of the original artwork, giving the series a timeless, playful identity that translates effortlessly across markets.

The seventh title, The Mystery of the Secret Library, publishing in February, will make its international debut at Bologna. In this new adventure, the Coscorrón Sisters investigate the Chatty Library, where books are mysteriously disappearing. Ascensión joins a romance book club, Carmen gets lost among cookbooks, and Rosalía disappears under piles of fashion magazines, while Marcelo hides between the shelves, hoping to catch the culprit. The result is a fast-paced, laugh-out-loud mystery that turns one of the quietest places on earth into the noisiest investigation yet.

To celebrate this new stage, The Coscorrón Sisters will be relaunched with brand-new cover designs and hardcover editions, reinforcing the series’ identity and international positioning. Already published in six languages, rights have been sold in Icelandic, Italian, Portuguese–Brazil, Simplified Chinese, Slovenian and Turkish.

A cozy mystery series full of adventure, humor, and heart… because when the Coscorrón Sisters take on a case, keeping quiet is simply not an option.