Terry Lennox is a fictional character from the novel "The Long Goodbye" by Raymond Chandler. He is portrayed as a charming and enigmatic man, often seen as a friend to the protagonist, private detective Philip Marlowe. Lennox's character is central to the story, as his mysterious past and troubled life unfold throughout the narrative. In the novel, Lennox becomes embroiled in a murder investigation, leading to significant consequences for both him and Marlowe. His complex personality and the moral dilemmas he presents reflect the themes of loyalty and betrayal that are prevalent in Chandler's work.