Martin Vail is a fictional character from the legal thriller film and novel titled "Primal Fear." He is portrayed as a high-profile defense attorney known for taking on challenging cases. Vail is characterized by his charisma and determination to uncover the truth, often navigating complex legal and moral dilemmas. In "Primal Fear," Vail represents a young altar boy accused of murdering a priest. As the story unfolds, Vail's investigation reveals unexpected twists and deep psychological themes, highlighting the intricacies of the legal system and the nature of justice. The character is played by actor Richard Gere in the film adaptation.