The revelation came suddenly, as it usually happens with revelation. Admittedly, Kevin had already had Don Alston as a suspect in his mind, but he still lacked a clear motive for the actions of a young driver. There were still some facts left unconnected in Moore's mind. Everything was based on intuition rather than logic.
Intuition is important, but it is logic that finds the evidence needed for an arrest. Intuition gives direction, but logic provides the course.
Kevin Moore had no idea if Don Alston actually killed Rita. He had no evidence, but it was not the evidence that served as the basis for the investigation, the investigation was to bring evidence, and the third driver of the Fergus Stables had become, in Moore's eyes, a man to be carefully looked at.
Excitedly, Kevin stormed into the room where Sullivan and Denning were in office, and they were both almost dragged into the check-in room.