[A small satisfied smile creeps on Light's face. Bingo. The woman may have been disastrously ineffectual during the Kira investigation, but if she had worked with L on the BB case, Light would have been a fool to disregard her opinion. It doesn't matter if Misora does not believe Light is L, he's already more than satisfied with the information he's received.]

A motive is something that can be established after he is apprehended. What is more relevant at this moment in time is the prevention of further bloodshed. It will be of great importance to identify any patterns and regularities in order to predict his next victim. Am I correct to assume you are capable of this much?