El Peor Día de Karen (La Hermanita de Las Niñeras #3)

Katy Farina is the creator of eight New York Times bestselling graphic novel adaptations of the Baby-sitters Little Sister series by Ann M. Martin and of an original graphic novel for young readers, Song of the Court. Previously, she painted backgrounds for She-Ra and the Princesses of Power at DreamWorks TV. Katy lives in Los Angeles with her husband and two rambunctious cats. Visit her online at katyfarina.com.
Ann M. Martin is the creator of The Baby-sitters Club, which has more than 190 million books in print, making it one of the most popular series in the history of publishing. Her novels include A Corner of the Universe (a Newbery Honor Book), Belle Teal, Here Today, A Dog's Life, On Christmas Eve, and the Main Street and Family Tree series, as well as the much-loved collaborations P.S. Longer Letter Later and Snail Mail No More with Paula Danziger. Ann lives in upstate New York.