In my experience with meditation, the mind can come up with a lot of things that seem meaningful but aren’t. I think that dreams tell us about our subconscious, which is usually a reflection of conscious awareness, but the details of a dream are generally not as helpful as the mood or symbols.
For example, if you were feeling anxious and brow-beaten during sleep, you might easily have linked those sensations with your Father. If you also decided in the dream that you needed a way to escape that sensation, you may first have decided that murder was a drastic but plausible measure. In fact, the idea to hurt someone may come up first (as a solution to a problem) during waking moments, but most people recognize that it is not and quickly abandon it for another solution. This may happen so automatically that you never recognize that the impression was there. However, in the dream world, all actions are allowed without inhibition so that initial impulse may have carried forward and resulted in the dream murder. Therefore, the dream is a reflection of what could happen if you followed all your impulses without question. But naturally, you don’t do this anyway. Everyone is always thinking about the consequences of their actions, in one way or another.
Let’s consider another way such a dream could come about. Let’s say you were dreaming about walking around your house and you thought “what’s a room in my house I can walk into?” and “kitchen” was the first thing that popped up. Random. Then you said, “what would I find in the kitchen?” and “knife” popped up. Random. “What’s another room?” and “Dad’s bedroom”. Well, now you have a knife and you’re in your Dad’s bedroom and he’s asleep. Anyone who was watching this on TV would have a general idea what happens next. If your random thoughts created such a situation, it would have been easy for the semi-rational subconscious to “finish the story” with a murder.
Finally, if you are nervous that this is a prophetic dream, I have a piece of advice for you. According to Ken Wilber and Elmer Green (researchers and publishers in the science of human consciousness, more or less), intuitive knowledge occurs with a sense of certainty. In other words, there is no question in the mind of the person who has had a prophetic dream that the dream will occur. If you have any doubt whatsoever that the dream is prophetic, there is a very high probability that it is not prophetic.
In short, I think you have nothing to worry about. Dreams can often be disturbing, but this is only because life is sometimes disturbing. If you have a lot of disturbing dreams, you might consider reading different books or taking up meditation to relax your mind before sleep.
Thanks for listening.