He was always a bit secretive and surreptitious in his manner, but most people attributed that to shyness.
Everyone who met him initially regarded him as an affable, likable sort, but after awhile, when the realization was made that he was far from shy, began to regard him with suspicion.
He seldom talked about his past and not even those closest to him knew if he had any living relatives. When he spoke of family he always referred to them, whether it was his mother or father, sisters or brothers, in a past tense, as if they had all met an untimely end and it was a topic he was not comfortable discussing,
Not one person who had made his acquaintance had ever imagined the truth of his nature and no one had even come close to guessing who and what he really was.
And until the day when the hordes of men and women from twelve different government agencies showed up looking for him, not one of the people who had came to know him since he had moved into the neighborhood almost six years ago would have thought for a second that he was capable of violence.