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Our readers meet two lovely sisters again - the younger Marin and the older Wendy.

In this book, you will learn about the sisters' new winter adventures and meet Darwin, the dog left in the sisters' care by their grandparents. He is a "Yorkshire premier" - that's what Marin thinks this breed is called. (Although in fact, you guessed it, he is a Yorkshire terrier.)

And you'll also learn about their super adventures, because Marin and Wendy are super agents M and V! How could this have happened? Read on...

This comic is not only for girls, but also for boys - because sometimes they also need to understand their sisters or school friends and find an approach to them.