Here’s what I’m reading right now: I’m a big fan of Ally Carter’s two YA series: the Gallagher Girls books, about the adventures of girls in a secret boarding school for teenage spies-in-training, and the Heist Society books, about the adventures of a girl in a family of storied thieves.

And last month, Ally combined the two series in a free novella, Double Crossed!

Macey McHenry—Glamorous society girl or spy-in-training?

W.W. Hale V—Heir to an American dynasty or master thief?

There are two sides to every coin. Whether these two can work together is a tossup.

Born into privilege, Macey and Hale are experts at mingling with the upper class. But even if they’ve never raised an eyebrow at the glitz, neither teenager has ever felt at home with the glamour.

When Macey and Hale meet at a society gala, the party takes a dangerous turn. Suddenly they’re at the center of a hostage situation, and it’s up to them to stop the thugs from becoming hostile. Will Macey’s spy skills and Hale’s con-man ways be enough to outsmart a ruthless gang? Or will they have to seek out the ultimate inside girl to help?

The worlds of Heist Society and the Gallagher Girls collide in Ally Carter’s fast-paced, high-stakes and tantalizing new story. Get a behind the scenes glimpse as Ally delivers an irresistible thriller that is full of her signature style and savvy twists.

The free crossover novella is available in digital formats only (so if you want to read it, pick up a Kindle app for your phone, tablet or computer!)—and it comes out just in time for the third Heist Society novel, Perfect Scoundrels, which releases today! (Uh, yeah, I’m excited.)

The sixth and final book in the Gallagher Girls series will also come out later this year.

What’s on your to-be-read pile? What are you reading now? Any other Ally Carter fans out there?