I propose to tell you–in the first place–what is known of the manner in which your cousin met his death; appending to the statement such inferences and conclusions as we are justified (according to my opinion) in drawing from the facts
Sergeant Cuff's narrative is very straight forward and to the point compared to the others, especially Miss Clack. Because Cuff's intention in this narrative is to relay facts to Franklin, and also because he is a detective, Cuff uses few unnecessary adjectives or "flowery" language. I would be interested in running a POS (Parts of Speech) analysis on Cuff's narrative and compare it to Clack and Betteredge, as well as the rest of the text.