Anja Ukpai is an author of the Sherlock Holmes Academy (under the pseudonym Holly Watson). She was awarded the Leipzig Reading Compass for Die kleine Räuberlilli and the DELIA Youth Literature Prize for Rabenherz. Die Clockmakers Academy is the first part of her Meridian Princess trilogy. Marisa Meermädchen (under the pseudonym Anja Wagner) is an Amazon-Bestseller. The author lives with her family in Münsterland and in Michigan/USA.