I agree, ask in the local pub, pop in with your DH and get talking to some of the older locals, ask a bit about where you are hoping to buy and if they know the street. Local pubs are full of gossip and if there is a grisly story, they will know it and what house it happened in.
I do think that houses have a ‘vibe/energy’ to them and I knew instantly when we walked into our home, that it was for us! It had and has a lovely, family feel to it, many of our relatives, friends and visitors have commented on what a lovely feel our home has. When we bought it, every ceiling was painted orange, the wildest wallpapers were on ever wall, including a hideous varracous vein wallpaper that made you dizzy if you looked at it too long! It has been beautifully renovated since, although has also had two children grow and live in it since, so it is definitely more homely that show-home!
We looked at so many houses and have visited many, our own childhood homes had bad vibes to them and I couldn’t live somewhere that had a bad ‘feel’ to it. I know that sounds crazy but my dh agrees and we are very happy here fifteen years on. My parents home has never had a nice feel to it, despite being a warm house, it was cold. We used to feel like water was falling on us when we climbed the stairs. Yet there was no leak! My Mum mentioned it to a neighbour and was told that a previous occupant had committed suicide in the bathroom. She asked our local priest to come round and he blessed every room in the house. It stopped the water sensation, which may have been suggestion or not, but ever since moving there, they have had one bad thing after another happen to them . But they love that house, they moved into it just under 30 years ago and are still living there today. It still has the bad feel that it did when we moved in!
Anyway, don’t let the above put you off. Personally, I think that if you both LOVE the house and have physically been round the house to make that decision, then it is very unlikely that it is a house with a grisly history. You would feel it, I am sure you would! But then I trust my instincts .