6 Tunnels books in order

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… show more.

The Tunnels adventure is far from over for Will Burrows.

In his quest to find his father, Will is plunged even deeper underground.
And as if things weren't bad enough already, he stumbles
across a Styx plot with terrible implications for the world above.

And a sister who isn't finished… show more.

After DEEPER, can the TUNNELS adventure be any more dangerous? And
where will it end?

Will Burrows and his gang are far from finished as they free-fall
down a subterranean pore. As they experience reduced gravity, the
dark mysteries of the deep unfold and they discover a strange fungal
shelf,… show more.

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… show more.

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.… show more.

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… show more.