I had a dream at the weekend where I was staying with a wealthy family in a stately home, when Poirot showed up. I was the only person who knew who he was and what he did, everyone else just thought he was a family friend who happened to be a detective (in typical fashion).
I spent the entire dream wondering when something was going to happen, and then BOOM! the following morning, the two sisters were missing, at which point Poirot went to work and I woke up, damn! It was so good!
I questioned a good friend of mine whether this dream reflected whether I'd watched too much Poirot, but we agreed there wasn't such a thing. Definitely not a thing at all.