Take the following as truth: I was not sure then if Inglethorp was the criminal or not, but if he was I reasoned that he would not have the paper on him, but would have hidden it somewhere, and by enlisting the sympathy of the household I could effectually prevent his destroying it. 
Then the following statement: "I knew with absolute certainty then that Inglethorp was definitely the criminal. " is true, false, or inconclusive?