Time Shifters: Into the Past: (Time Shifters Book 1) by Kate Frost

Time-shifted to the past, three twenty-first century children fight to survive or risk being lost in time forever.

When Maisie Brown is time-shifted to 1471 during a school trip to Warwick Castle, it’s the beginning of an incredible adventure. The only problem is she has to share it with Lizzie, the class bully, instead of her best friend Danny. He’s…