Why don't the invisible guests take their pens away?

The invisible guest didn't take the pen away, so he may have left some physical evidence.

Judging from the plot of the film, Adrian, the hero, left his pen on the bedside table in the room when he was dating his lover in the hotel. After the quarrel, the lover left the room, while Adrian left the hotel in a hurry. In the process, Adrian may not notice the existence of the pen, or he may not take it away.

Adrian may knock his pen over the floor or table when he has an argument with his lover in the hotel room. In the process of leaving in a hurry, he may not have noticed that his pen was dropped. The pen in the film may be an important material evidence to reveal the truth of the case. In the subsequent development of the film, we can see that this pen has become the key evidence, revealing Adrian's innocence.

Plot analysis

The director may have deliberately arranged for the pen not to be taken away to highlight the plot and theme of the film. Finally, judging from the narrative technique of the film, the director may increase the curiosity and tension of the audience through the details that the pen has not been taken away. By making the audience doubt whether Adrian really murdered his lover, the director succeeded in arousing the audience's interest and curiosity.

To sum up, there may be many reasons why the pen was not taken away in the movie Invisible Guest. The director may highlight the theme, plot and narrative techniques of the film through this detail. At the same time, this detail may also be a hint or foreshadowing to guide the audience to think deeply about the plot and role relationship in the film. Whatever the reason, this detail adds more layers and charm to the film.