New York Times bestselling authors Raina Telgemeier and Gale Galligan team up and return to The Baby-sitters Club -- both Raina and Gale adapt and illustrate this super special graphic novel!Kristy, Claudia, Mary Anne, Stacey, Dawn, Mallory, and Jessi are the luckiest baby-sitters in the world. This summer, they're going on what is sure to be the best vacation ever: a plane ride to Florida, a cruise to the Bahamas on an extravagant ship, and then back to Florida for three days of fun at a huge amusement park!The BSC has a million adventures, of course. And they still have time for what they like best of all -- baby-sitting!