If he had to hatch a plan to kill the king, it was not possible within the fort because he and his movements would be constantly under watch. 
ɪf hi hæd tu hætʃ ʌ plæn tu kɪl ðʌ kɪŋ, ɪt wɑz nɑt pɑsʌbʌl wɪðɪn ðʌ fɔɹt bɪkɔz hi ʌnd hɪz muvmʌnts wʊd bi kɑnstʌntli ʌndɜ˞ wɑtʃ. 
 "Indian speaks with a very monotone tone in a room with very clear acoustics and no discernible reverberation."