My ILs lived in the same town as Rolf Harris and they said he was a complete twat. Full of his own self importance, used to try to block any kinds of applications for anything, didn’t want to be part of the community, and all round unpleasant.
And this was before we knew what he’d done.
TBH I think that often after the event we can look back and thing “I always had a bad feeling/thought he was a bit off/that there was something not quite right,” when in actual fact it’s the crime that make us look back because no-one wants to think they didn’t know what a creep that person was.
And yet most of these criminals lead completely normal lives, with normal friends and families, holding down normal jobs, and are normal enough to their victims hence how it happens that they become their victims.
I saw a programme about Peter Wright recently, and one of the prostitutes they interviewed on there said that they had all been with him at some point, and that he was utterly lovely and very respectful even of the women, and that nobody ever felt in any kind of danger with him.