Debbie--have you seen John Flanagan's THE GHOSTFACES?

A reader wrote to ask me if I've seen John Flanagan's The Ghostfaces. I haven't, so am adding it to the "Debbie--have you seen" series.

Here's the synopsis:

From John Flanagan, author of the worldwide bestselling Ranger's Apprentice, comes a brand-new chapter in the adventures of young Skandians who form a different kind of family--a brotherband.

When the Brotherband crew are caught in a massive storm at sea, they’re blown far off course and wash up on the shores of a land so far west that Hal can’t recognize it from any of his maps. Eerily, the locals are nowhere in sight, yet the Herons have a creeping feeling they are being watched.

Suddenly the silence is broken when a massive, marauding bear appears, advancing on two children. The crew springs into action and rescues the children from the bear’s clutches, which earns them the gratitude and friendship of the local Mawagansett tribe, who finally reveal themselves. But the peace is short-lived. The Ghostfaces, a ruthless, warlike tribe who shave their heads and paint their faces white, are on the warpath once more. It’s been ten years since they raided the Mawagansett village, but they’re coming back to pillage and reap destruction. As the enemy approaches, the Herons gear up to help their new friends repel an invasion.

"Ruthless, warlike tribe"?!

"On the warpath"?!

My head hurts just reading the synopsis.  One red flag after another! It came out on June 14, 2016 from Penguin.

According to Amazon, it is already #1 in its Kindle Store and in the Children's Books category, too, in the "Fairy Tales, Folk Tales & Myths/Norse."

If I can get Flanagan's The Ghostfaces, I'll be back with a review.