Late to the party here, but didn't think of this until now.
My wife (who was then just my girlfriend) calls me up hysterical, saying that someone is inside the house and she heard them talking. She was home alone while her mom was at work. I lived over a half an hour away, so she ends up calling a friend that lives nearby to come take a look. Probably should've called the cops at this point, but yeah...they check out the house and didn't find anything. Later she hears the voice again, coming from her laptop. Turns out the cat had walked on her keyboard and somehow enabled the voice assistant.