Carlton Lassiter is a fictional character from the television series Psych, which aired from 2006 to 2014. He serves as a detective with the Santa Barbara Police Department and is known for his serious demeanor and dedication to law enforcement. Lassiter often finds himself at odds with the show's main character, Shawn Spencer, who uses his keen observational skills to solve crimes. Lassiter is portrayed by actor Timothy Omundson and is characterized by his no-nonsense attitude and strong sense of justice. Despite his tough exterior, he occasionally shows a softer side, especially in his interactions with his colleagues, including Juliet O'Hara, who becomes a significant part of his life.