John Kalinski plans to live out his life within the solitary confines of a barren canyon in the arid Arizona wastelands, but finds his world abruptly interrupted by seven strangers who descend upon his canyon in a crippled airplane. Caught between preserving the balance of an unspeakable truce with the welfare of seven souls, John must overcome lifelong fears which transcend even the preservation of his own life.

A thriller with elements of horror, mystery and romance, Clive Cussler, says of the novel, "Relentless gives the reader as much action as they can hope to find. DiMari has woven a fast paced tale of intrigue that flies from the opening sentence to the last. Reading entertainment at its best" - January 18, 2001.