on the way to bath douglas briefly , curtly and in no detail ( because , he told her , in all seriousness , if he went into detail , there was a good possibility he would have to kill her , or , if not him doing the deed , someone else would ) explained something about the mi6 ( or mi5 , she did n't hear him correctly and was too scared to ask ) , russians , the mysterious two-year disappearance ( training and undercover work ) and white slavery .