Trevor Langan is a high-priced Defense Attorney and Senior Partner at Henshall & Langan. (SVU: "Pure") His clients included pension plan managers; his reputation was such that, when Olivia Benson was framed for murder by a recently-released rapist she and Stabler had arrested, her friends pooled their resources to hire Langan to represent her. Langan seemed to have a good relationship with Assistant District Attorney Alexandra Cabot. They went out on a dinner date together. (SVU: "Angels")