The cask of Amontillado summary

The short story that I read was "The cask of Amontillado". I think that this was a very intriguing piece of writing with evil, manipulative schemes in the story. At first when I first read it I did not fully understand the context with all the different words but I googled the words I was not familiar with and I now know what it was about. The only negative of this short story is the fact that it was short and not enough information was in the story to make it even better than it was like what was the reason why Montressor murdered Fortunato? Did he do something that bad that made him deserve a murder like that? Overall I really enjoyed the plot and storyline.