Max Martini and “True Blood” alum Ryan Kwanten will star in Amazon’s drama pilot “Edge,” Variety has learned exclusively.

The duo will play rivals, with Martini in the role of Josiah Hedges, better known as Edge, who goes on a bloody mission of vengeance when his younger brother is killed by a group of his former Union army comrades, lead by his nemesis, Merritt Harknett (played by Kwanten). Edge is described as fearless, intimidating and “the meanest-looking man in any room he chooses to enter.

Kwanten’s character is the son of a prominent senator who can seem charming until he is revealed for who he actually is — a psychotic sadist who delights in inflicting pain on others. He is pursuing Edge for an undisclosed reason.

Set in Kansas, the Western drama from “Iron Man 3″ screenwriter Shane Black is based on the book series by author George Gilman. Black will serve as writer, director and exec producer. Fred Dekker will also write and exec produce, along with EPs David Greenblatt and Barry Josephson.

Martini’s recent credits include “Fifty Shades of Grey,” “Revenge” and NBC’s “Crisis.” He is repped by ICM.

Kwanten is repped by CAA and manager Orly Adelson.

Source: Variety.com