In the Phantomhive Manor Murders Arc, in the Manga, when the murders were happening, the characters who were investigating specifically mentioned that there were no footprints of anyone from outside who might have come from storm or might've been wet because of rains near the crime scenes.
But later
when Sebastian was explaing that he was behind everything and that he switched corpse places from outside windows. Also he was shown wet a number of times. But no footprints were found? There were no footprints of the wet Sebastian? How?
Was mentioning the "no traces of footprint" thing a mistake or was it ignored while sebastian was explaining what had actually happened?