Episode 21: The conclusion?

Inspector Blu and Philip were having a quick lunch at the fudge factory cafeteria. ‘There seems to be fudge everywhere’ the Inspector said, noting Philip fidgeting at his seat. ‘Who do you think did it, Inspector?’ “Who do you think did it, Phil?’ ‘Oh, it is as plain as daylight. Billy killed Bob Knoff because he did not pay for the fudge he was buying. Brown killed Billy because he was selling fudge from the factory’s premises.’ Philip said triumphantly. He cracked the puzzle.