he should either have handed it over to the police when they had searched the house - although he had secretly enjoyed the suspense of wondering if they would stumble on it themselves - or , failing that , he should have tried to use one of these bank night safes he had often seen but did n't really understand , or even gone to the bus station and put the parcel in a locker - if the lockers were still open , which knowing bus stations and the facilities therein , they probably were n't .