This is blurb for "The Giant`s necklace" by Michael Morpurgo

Cherry is a girl -who is determined- to finish her Giant necklace

with pink uniform shells. She is on holiday on a secluded beach

with her just family. Cherry goes out on the deserted beach to

collect more shells; she gets caught by the fierce tide. Could

any thing get worse than that?  

I like this engaging book because it twists and turns throughout

the story. There are many questions you ask yourself at the end

which in my opinion I like very much.