Americas favorite series returns with a new look and a Netflix tv show. Mallory knows shes a good baby-sitter. Shes been looking after her seven younger brothers and sisters for years. So when Kristy offers her a steady job baby-sitting for the Arnold twins Mal thinks itll be easy money. The twins sure are cute in their little matching outfits. But once Mrs. Arnold leaves Marilyn and Carolyn turn into twin terrors! They run around the house like spoiled brats and Mallory cant even tell them apart. Taking care of Marilyn and Carolyn is a baby-sitting nightmare. But Mallorys a responsible member of the Baby-sitters Club -- and shes not giving up!