Shared dream

Okay, my dream last night was rather bizarre, but then I do have some bizarre dreams sometimes... In my dream, I am on a space ship, kind of like in Star Trek. (I say this because <PERSON> was in my dream; actually TWO Spocks!) Anyway, I am on this space ship with another man who looks like <PERSON>, but is not. I do not remember why we were there, only that we were not supposed to be on board. We were talking about what if we were discovered by someone and the fake <PERSON> said something like, "The only way they would know we are not who we say we are is if the ship lost it is artificial gravity. They would be floating around in zero gravity but we would still be able to walk around." Not long after he said this, though, that is exactly what happened. But while I was unaffected by it, fake Spock started floating. In the dream I knew it was because he had not ingested whatever it was we were taking to enable us to move around in zero gravity. (a pill or liquid or something.) In the next part of the dream, I am watching things unfold as if I am watching it on TV. A group of people are in what looks like the engineering section of the ship and <PERSON> is there as well. (The REAL Spock; he is preparing to fix the artificial gravity.) Just as he is getting started, the fake Spock walks in. I am thinking to myself, "He is going to get caught because 1. He is walking and there is no gravity, and 2. Now there are TWO Spocks!" But when I watch fake Spock approach, he is wearing what look like gravity boots. (They are not; they are fake as well but only he and I know this.) And he passes himself off as <PERSON>'s twin brother, which the real Spock, while giving him suspicious looks, does not dispute for whatever reason. In this next part, I am not sure if it is part of the same dream, or a fragment of another dream: I am suddenly in a large old mansion. I am in a study or library and waiting for some friends of mine to return. Suddenly a panel in the wall opens up and there is a man dressed as a butler there but he appears to be made up of cotton stuffing inside a man shaped nylon covering, kind of like pantyhose. He is motioning for me to come with him, but I refuse because I know he is an imposter; the real butler is with the group of people I am waiting on to return. Anyway, when I refuse to go with him, the man comes at me and tries to force me to come with him but I resist and we start fighting. We are struggling on the floor and I am yelling for help and telling my friends that "I have found the imposter", but my friends are in another room or upstairs and cannot seem to hear me. Eventually I get the upper hand in the fight and get my opponent's head stuck underneath a chair or other piece of furniture. I am punching and kicking him when suddenly he transforms into a friend of mine. He is pleading for mercy and begging me to stop hitting him. I eventually stop and help him back on his feet but as soon as he stands up, he runs off. I chase after him and as I do, he again transforms, this time into a dog. I am chasing him across a green field towards a small creek. But he is running to fast and I cannot catch him.