Ruby Red (original title: Rubinrot) is a novel by German writer Kerstin Gier. It is the first book of the Ruby Red Trilogy and is followed by Sapphire Blue and Emerald Green. The books have been translated into over twenty-seven languages and sold internationally. The series follows the story of Gwendolyn Shepherd, a time-traveling girl living in contemporary London. Gwendolyn Sophie Elizabeth Shepherd (Gwyneth in the English translation) is the 16-year-old protagonist of the series. She is the daughter of Grace and Nicolas Shepherd, born on 7 October 1994. She lived a normal childhood, believing her birthday was instead 8 October, leading her to think she was not the one to have inherited her family's time travel gene. In fact, she did inherit the time travel gene over her cousin Charlotte, and is the last of twelve time travelers, known as the Ruby. She has, differently than the rest of the Montroses, straight dark hair and blue eyes. Gwendolyn is said to be very clumsy, always accid...