That's what it turned out to be. My partner is allergic to dust and when the cleaners come, every other Friday, we often go to the movies and that's what we did.
Nevertheless, I got Chaper One written and four pages of Chap. Two. I've introduced the person who hires the PI and established who is missing. My protagonist will now be tracing and interviewing people that were mentioned in Chap. One. But as the novel progresses it'll get harder and harder.
Still, I'm pleased with my start and thrilled that it's the weekend.