Ruby Red Trilogy
The Ruby Red Trilogy is a series of three fantasy novels by German writer Kerstin Gier. The three books are: Ruby Red, Sapphire Blue and Emerald Green. The books have been translated into over twenty-seven languages and sold internationally. The series follows the story of Gwyneth Shepherd, a time-traveling girl living in contemporary London. Nobody knows that Gwyneth has the time traveling gene, except for her and her friend Lesley.