Come Out, Come Out, Wherever You Are
"At breakfast in a country hotel, American tourist Cathy More inquires about the whereabouts of her cousin Jane, who has been traveling with her. The proprietors, Mr. and Mrs. Lewis, insist Cathy was the only person to check in the night before, and Jane's room shows no sign of having been occupied. The police are called to investigate, but they began to suspect that Jane may be merely a figment of Cathy's disturbed mind."
I've watched this one twice and never understood it. Can someone be kind enough to explain what exactly it was all about?