Book Review: Freefall

Finally! The next book to the series "Tunnels", the build-up was fantastic and many more unexpected things happen in this book. New characters and old characters come together unseemingly and the story is as smooth as a silk. The end was superbly dramatic and leaves a long lingering taste, the desire to read more.
As Will, Chester and Elliot drop down the abyss, together with Cal's body and Bartebly (the Stalker, an animal), they land on a gigantic fungus but Will and Chester realise the horrible truth that Elliot is seriously injure and a amazing discovery that the gravitational pull is only one third of what it is above ground, the deeper you are, the weaker the gravitational pull is.
Will has to prepare a few things before they go off and dumps Cal's body down a seemingly never ending shaft. He moves off with Chester and carries Elliot all the way and find an unexpected surprise... Gigantic spiders/monkeys/bugs underground! They attack with verocity like none other and they are saved by a rather elderly woman, about late 40's.
She brings them to her home where she tries her best to nurse Elliot back to health and tells them something for the worst. They have to travel deeper to an abodoned submarine (which none of them knew how it got there) and get some medicine to save Elliot.
Little do they know that as they are closing the submarine with the fatally sick Elliot, that the evil twin sisters, Rebecca and Rebecca, are following them with a Limiter. They avoid the weird spiders with Arsenic Flare but face a bigger threat, the Brights, the fastest moving creatures that anybody has ever witnessed.
Many more events pass like meeting Drake, meeting Dr. Burrows (Will's adoptive father), and the discovery of the second sun, the sun within the Earth. Where Will, Elliot and Dr. Burrows live peacefully for a while until the biggest surprise of all happens.
Fantastic sci-fi thriller/adventure, the best "Journey to the Center of The Earth" book i have ever read.