`` for if i fall into the clutches of the intelligence branch upon our return to london , they will torture me to find out what i know about a certain spy ring , and i have already told them everything i can about that and can not tell them any more , but they will not believe me so they will hurt me more and more '' -i start gasping for air- '' and more , and when they are convinced that i can give them no additional information , they will kill me-either privately with a knife to the throat , or publicly with a hanging at newgate prison .