Ranger, the time-traveling golden retriever, has landed in Viking age Iceland, where he meets a girl named Helga, who seems perfectly able to take care of herself--until an erupting volcano and an early arriving baby forces Ranger and Helga to journey through the ash and smoke to find her father and bring him home.

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.