Del Rio believes the person responsible for Shelby's death has exceptional skills, comparing their ability to the expertise of a Beverly Hills proctologist. He suggests that the killer was highly efficient and experienced in breaking into homes, indicating a professional level of planning and execution.
He mentions investigating professional contract killers and has already received some promising leads. Del Rio is confident that with continued effort, they will solve the case and catch the perpetrator, emphasizing his determination to bring justice for Shelby.