The mysterious box that Ranger the golden retriever found in the garden transports him back to first century Rome, where he must rescue Marcus, a young servant boy, and Quintus, a volunteer gladiator, from the brutal world of the Colosseum.

Kate Messner is the author of The Seventh Wish; All the Answers; The Brilliant Fall of Gianna Z., winner of the E. B. White Read Aloud Award for Older Readers; Capture the Flag, an SCBWI Crystal Kite Award winner; Hide and Seek; Manhunt; and the Ranger in Time and Marty McGuire chapter book series. A former middle-school English teacher, Kate lives on Lake Champlain with her family and loves reading, walking in the woods, and traveling. Visit her online at katemessner.com.