Book 1

Night Terrors #1

by M.C. Sumner

Published 1 February 1997

Book 1

Night Terrors

by M.C. Sumner

Published 1 February 1997
The moment Noah and Harley meet, they feel an immediate connection-- a connection that goes deeper than either ever could have believed. Alone, both are lost in their personal terrors of the night. Their last hope lies in learning to trust each other, but in the Extreme Zone, they can never trust anyone-- including themselves...

Book 2

Dark Lies

by M.C. Sumner

Published 1 February 1997
Noah and Harley were thrown together by circumstances beyond their control. Now they are bound together by forces beyond their comprehension. They must be careful whom they trust, for Noah and Harley have crossed the dark borders of the Extreme Zone, and anyone could lead them to certain doom -- or to salvation.

Book 2

Dark Lies #2

by M.C. Sumner

Published 1 February 1997

Book 3

Unseen Powers

by M.C. Sumner

Published 30 October 2013

Book 3

Unseen Powers

by M.C. Sumner

Published 1 January 1997
Although they're only pawns in a deadly game, Noah and Harley are slowly discovering the potential of their own minds. Separated by the dark forces that wish to control them, they're both vulnerable to treachery and lies. But if they find each other again, their combined strength could unleash the chaos of the Extreme Zone -- and the world will never be the same.

Book 3

Unseen Power #3

by M.C. Sumner

Published 1 March 1997

Book 4

Deadly Secrets

by M.C. Sumner

Published 1 April 1997
Knowledge is power, but ignorance has a strength of its own. Through accident, blind searching, and faith, Noah and Harley have stumbled upon the world's most carefully guarded secret. They are about to witness the truth of the Extreme Zone.

Book 5

Common Enemy

by M.C. Sumner

Published 31 December 1997
Blinded by the desire for revenge that binds them together, Harley and Kenyon are in danger of missing the real enemy pulling the strings. The true face behind the mask can only be revealed in the Extreme Zone.

Book 5

Common Enemy #5

by M C Summer and M.C. Sumner

Published 1 August 1997

Book 6

Inhuman Fury

by M.C. Sumner

Published 1 October 1997
Evil comes in many guises and keeps its most terrible powers in reserve. Kenyon and Harley have only seen the merest glimpse of what Billie can do. When they believe they have dealt her a fatal blow, she invokes the ultimate ancient force. In the Extreme Zone, Evil can never truly be destroyed...

Book 6

Inhuman Fury #6

by M.C. Sumner

Published 1 October 1997

Book 7

Lost Soul #7

by M.C. Sumner and M C Summer

Published 1 December 1997

Book 7

Lost Soul

by M.C. Sumner

Published 30 October 2013

Book 7

Lost Soul

by M.C. Sumner

Published 1 January 1997
Your life is shaped by the memories of people you've loved in the past. But Scott and his friends Kenyon, Harley, and Dee will soon learn that trusting your memory is the worst mistake you can make in the Extreme Zone.

Book 8

Dead End

by M.C. Sumner

Published 1 February 1998
Sometimes, a dose of deep suspicion can keep you alive. In the midst of the conflicts that surround them, Harley, Scott, Dee, and Kenyon must choose their path wisely. For in the Extreme Zone, the road not taken might lead to salvation.