The Harsh are hungry for revenge for their dead King, and they set sail on their massive fleet to find and kill Owen and the Resisters once and for all. In order to stall time for the Resisters and find out any information possible, Owen goes on a journey and finds, among other things, his father and grandfather from the past, some surprising allies, and the key to the mysterious Frost Child, who holds the keys to the Harsh.
The Harsh are an evil race that seeks to destroy all other creatures. Johnston nearly starves Rosie in a dank cellar.
The Resisters fight selflessly for each other. Owen and his Resister friends grow as close as anyone else in history ever has. They are the best friends many people look for. There is some lack of trust between them at the beginning, which changes by the end.
God is not mentioned in this story, but Owen and the Resisters have a clear sense that they were called to protect Time. The whole idea of the Frost Child and the keys to the Harsh may be considered spiritual.
There is a war at the end of the book (people get stabbed and some lose limbs). They are not described graphically. A nearly-frozen girl is kidnapped and given no food. Someone is shot.
Drug and Alcohol Content
Johnston and his men drink. There is a drink that makes a pirate captain almost lose his mind because of its addictive composition.
Crude or Profane Language or Content
The characters curse, but the words themselves are not mentioned in the text.
This book is a fantastic conclusion to an excellent sci-fi/fantasy series. Like its predecessors, this one has an interesting plot and never a dull moment.
Just watch out for the war at the end, and for the manipulation and lack of trust that are present among the weary Resisters during the beginning of the book until the final victory.