TNT has released an evocative new trailer for its upcoming drama series Legends, starring Screen Actors Guild Award winner Sean Bean (Game of Thrones, The Lord of the Rings). Featuring never-before-seen footage, the two-minute trailer provides the deepest look yet at the intense drama, which tells the story of an undercover agent plunged into a terrifying mystery over his own identity. Legends is slated to premiere Wednesday, Aug. 13, at 9 p.m. (ET/PT), exclusively on TNT.

Based on the award-winning book by master spy novelist Robert Littell, Legends stars Sean Bean as Martin Odum, an undercover agent working for the FBI's Deep Cover Operations (DCO) division. Martin has the uncanny ability to transform himself into a completely different person for each job. But he begins to question his own identity when a mysterious stranger suggests that Martin isn't the man he believes himself to be.

As Martin tries to find answers to the questions about his identity, he must also continue his primary job as an undercover operative, taking on such roles as a Serbian extremist, a Scottish soccer club executive, a corrupt Chicago police officer, British special forces colonel and a legendary computer hacker. There are many times, however, when he must choose between the demands of his job and his desperate desire to solve the mystery of his own identity. And he doesn't always make the right choice.

Legends also stars Ali Larter (Heroes) as Crystal Quest, a fellow operative who has a history with Martin; Morris Chestnut (American Horror Story, Nurse Jackie) as Tony Cimarro, a smart, quick-witted and charming DCO agent; Tina Majorino (Grey's Anatomy, True Blood) as Maggie Harris, the newest member of the DCO team; Steve Harris (The Practice, Awake) as Nelson Gates, the director of the DCO Task Force; Amber Valletta (Revenge) as Sonya Odum, Martin's ex-wife; and Mason Cook (The Lone Ranger) as Martin's pre-teen son, Aiden.

Legends is being produced by Fox 21, withHoward Gordon (Homeland, 24), Alexander Cary (Homeland, Lie to Me), Jonathan Levin (Charmed), Brad Turner (24) and showrunner David Wilcox (Fringe) serving as executive producers.