Book 1

Tunnels

by Roderick Gordon

Published 2 July 2007
Fourteen-year-old Will Burrows lives with his family in London. He
has little in common with them except for a passion for digging
which he shares with his father.

When his father suddenly disappears down an unknown tunnel, Will
decides to investigate with his friend Chester. Soon they find themselves
deep underground, where they unearth a dark and terrifying
secret - a secret which may cost them their lives.

Book 4

Closer

by Roderick Gordon and Brian Williams

Published 3 May 2010
At the centre of the Earth, in a world that no one knows exists,
Will is in trouble.

His enemy, the Styx, are close behind. They'll pursue him to the
ends of the world - any world.

Meanwhile Drake - with help from the unlikeliest of allies is preparing
to fight the Styx from above. But will his daring plan bring
him closer to victory ... or to certain death?

Book 5

Spiral

by Roderick Gordon and Brian Williams

Published 1 September 2011
In the fifth and penultimate book in the Tunnels series,
The Styx have surfaced. If you thought the Limiters were nasty, think
again. They've brought their females with them this time. And
all that stands in their way are Will and his friends, and a rag-bag
team of retired commandos. It's a smoking spiral of chaos and
not everyone is going to survive. Highly-anticipated fifth book
in the internationally bestselling Tunnels series.

Book 6

Terminal

by Roderick Gordon and Brian Williams

Published 2 May 2013
In this sixth and concluding book of the Tunnels series, the
Styx and their cohorts of deadly Armagi have swept across England,
leaving death and devastation in their wake. It seems nothing
can stop them now.

Only a miracle can save the day and, in the inner world at the centre
of the earth, Will and Elliott might just have stumbled upon
one as they uncover ancient secrets that are fundamental to all
human and Styx life.