Frozen in Time by Ali Sparkes has been named the overall winner of the Blue Peter Book Awards.
The novel won the award's 'book I couldn't put down' category and went on to scoop the Blue Peter book of the year honour.
Sparkes saw off competition from Guy Bass' Dinkin Dings and the Frightening Things, which was named the 'most fun story with pictures', and Why Eating Bogeys is Good for You by Mitchell Symons, voted the 'best book with facts'.
Tim Levell, editor of Blue Peter, said: 'What is so wonderful about the Blue Peter Book Awards is that the winners are decided by children, which I know means so much to authors. The standard of the books this year has been remarkable.'
Shortlisted titles in the awards included The Boy Who Fell Down Exit 43 by Harriet Goodwin, Frank Cottrell Boyce's Cosmic, Mick Manning and Brita Granstrom's Tail-End Charlie and Peter the Penguin Pioneer by Daren King.
Last year, the Blue Peter book of the year title was awarded to Shadow Forest by Matt Haig.
As the film is released of The Lost City of Z, we take a look at other Explorers' Tales. Plus, see some footage from the film intercut with readings by Charlie Hunnam from The Lost City of Z.
Are the novels Fire Child and Heat still shocking? They certainly are, says their author Sally Emerson, six of whose novels are being republished this year.
Myles Hopper describes how and why the pair became preoccupied with healthy eating.