Aliens join in the fun in this fourth book of The Clone Chronicles, a series that “strikes just the right balance between over-the-top adventure and real-life middle school drama,” mixing Alex Rider, Diary of a Wimpy Kid, and Michael Buckley’s NERD series to create an “action-packed success.”

Fisher, Two, Amanda, and Veronica are happy to spend their holiday break at Fisher’s parents’ new amusement park. But when aliens crash-land on Fisher’s favorite roller coaster, mistaking it for their home planet, it spells the end of R&R for our heroes. Meet the Gemini: not only are all the aliens identical twins, they’re also all beautiful girls. If Fisher and Two already thought girls were hard to understand, wait until they meet alien girls.