No. My ex-husband appeared to be a gentleman. Very considerate, hard-working, funny, charming, romantic. I was very careful, so dated him for years before we moved in together. Our friends and families knew each other well and nobody had any suspicions or reservations at all (the type of people I have in my life would have told me if they did). He did more than 50% of housework, he would cook lovely meals ready for me if I was coming home from a hard week at work. He was sensitive and kind and thoughtful and used to book surprise holidays for my birthday each year.
After 8 years together and 3 living together he proposed. We married a year later. It was another 3 years until I became pregnant (planned, much discussed re. equal parenting and much wanted by him).
When I was 8 months pregnant he told me he had run up tens of thousands of pounds of gambling debt. I supported him, and paid it off. Got him therapy. Checked his credit records each month (by mutual agreement) and this breakdown seemed to be over. He was a good father to our daughter, pulling his weight at home and seemed to be making a huge effort to make up for all of this.
We then had a second child. When she was four months old, he left suddenly. It then transpired that there had been many affairs.
Then, when despite all of this I put my feelings aside and made sure he had a good relationship with the girls so we could co-parent well, he was arrested for being a paedophile. Nobody had any idea. A friend who works in this area of policing and knew him well had no idea, either.
Some people really are psychopaths and incredibly good at manipulating everyone around them and making sure that even very astute, objective people who are not involved in the relationship see no red flags at all.
I think it can be damaging to victims to assume that there are always red flags that they ignored, either consciously or subconsciously, because sometimes there simply are not and everybody is fooled, not just the wife. It's a little victim blamey, although I'm sure that isn't your intention.
I'll have to live with the consequences for my children of what he has done and who he really is forever, as will they. But no, there is no way we could have known. It has taken a lot of conversations with the police and therapists for me to be able to believe that, but their view is that actually the worst people are very, very good at hiding who they are and convincing others of the opposite and that it absolutely isn't the fault of the victim for not somehow anticipating what they would later do.