Without a Clue

"Do you know about that phone call somebody made to Ash de Killer? It's very important. I've been told that a transcript exists, but nobody's actually shown me a transcript."

"I don't have one either," says Gumshoe. "The FBI and NSA guys are taking care of all that!"

(… but it's your case… how can you now know?)

He scratches his head. "I guess I oughta ask them about it before I testify, huh? Could be important."

"Could be."