The Silver Sequence is a young adult fantasy novel[citation needed] trilogy by British author Cliff McNish.
[1] The books in this trilogy (in chronological order) are: The Silver Child is about a group of children in an abandoned ship building site called Coldharbour, given special talents dubbed by the young protagonists as "gifts" to fight a force known to them only as "The Roar".
The novel initially follows an infant called Milo from his beginnings as an ordinary boy to his transformation into the Silver Child, an enormous entity of childlike proportions with wings and brightly shining skin - fated to act as the first line of defence against the Roar.
In the second book, he has become an enormous Guardian Angel, watching over the city of Coldharbour and looking after all the children in the world.
Emily and Freda are twin girls who can move extremely quickly over ground on their hands and feet.
In the second book they are given the ability to swim underwater for incredible distances, and Emily almost dies.
She is so used to this ability that, when she is unable to read the minds of the Unearthers (they are being shielded from her by Carnac), she is confused and upset.
At the end of Silver City, she uses the beauty given to her by Thomas to summon all the living things in the world to Coldharbour.
After failing to be able to return to her home planet she is hunting the children of Earth in a last-ditch attempt to resolve her hunger.
After being shackled to the bottom of the sea for many centuries, a group of children, led by Emily and Freda, manage to free it.
When it emerges, it seems helpful and talkative, if somewhat enigmatic, and often visits Helen in her mind, usually to offer advice.