The Artifact Hunters is a companion book/sequel to The Charmed Children of Rookskill Castle by Janet Fox.
When twelve-year-old Isaac Wolf flees Prague in the midst of World War II, he thinks he’s only running from the Nazis. He’s wrong: the creatures which are following him are much more magical and just as malicious.
But Isaac doesn’t know about these mysterious pursuers when his parents give him a closed box and tell him to leave. It’s only when he arrives at Rookskill Castle, a place laced with magic and strangeness with an unknown power pressing in on all sides, and he learns the box is a time travel machine, that he begins to uncover answers: about the creatures following him, about the clues his parents left for him throughout the past, and about himself. But will Isaac learn everything in time? Or will his pursuers catch up to him first?
The Artifact Hunters continues the mysterious atmosphere and vivid historical setting of The Charmed Children of Rookskill Castle. The magic in it is strong and interesting, from the time travel device to other powerful artifacts found along the way. I think I loved this book even more than the first one! I highly recommend The Artifact Hunters to readers ages ten and up.
Note: Although mostly unrelated, there is overlap (mainly characters) with The Charmed Children of Rookskill Castle, so I think The Artifact Hunters will be most enjoyed by those also familiar with the first book.