Mr. Men's Newest 'Doctor Who' Book Will Regenerate Into a Little Miss Title for the Thirteenth Doctor

In 2016, inspired by a growing number of fan art collections that depicted characters from Doctor Who drawn in the style of Roger Hargreaves’s beloved Mr. Men book series, the BBC saw an opportunity and jumped on it. Partnering with Sanrio, the network—which has been broadcasting the iconic sci-fi series since it first debuted in 1963—announced a new 12-part Mr. Men series, one for every Time Lord who had headed up the television series. Now, with Jodie Whittaker set to make her debut as the Thirteenth Doctor on October 7, the book series is getting ready to add its first Little Miss title to the lineup with Doctor Thirteenth.

Penguin, the book’s publisher, describes the book as a “fabulous mashup of the fantastical storytelling of Doctor Who and the whimsical humor of Roger Hargreaves,” and promises that “the book will to appeal to fans of both iconic brands!” Not much is known about the plot of the book, but here’s the official description:

“An all-new Doctor Who adventure featuring the Thirteenth—and first female!—Doctor reimagined in the style of Roger Hargreaves. The Doctor, Graham, and Ryan try and come up with a fabulous surprise for Yaz on her birthday. And what an explosive surprise it is …”

If you’re wondering: “Wait—Graham, Ryan, and Yaz?” They’re the Thirteenth Doctor’s new companions/pals.

While you’ll have to wait until November to get your copy of , the series’s first 12 installments, which were written and illustrated by Adam Hargreaves (Roger’s son), have already arrived in bookstores. (You can even buy a box set of the first eight titles.)

If you’re looking for yet another way to while away the days until Whittaker takes over the TARDIS, BBC America is kicking off a 13-day Doctor Who marathon at 6 a.m. ET/PT on Tuesday, September 25 with “Rose,” the first episode of the series’s reboot. The network will air every episode from the past 10 seasons, meaning that you can relive every moment of Christopher Eccleston, David Tennant, Matt Smith, and Peter Capaldi’s time as a Time Lord—all leading up to Whittaker’s grand debut.