What is the fine-grained topic of the following text: One watches with the intention of simply enjoying baby-faced Langdon’s skillful slapstick maneuvers, but a central plot element — his desire to kill his fiancee (Bonner) after stupidly falling for a passing vamp — undoes whatever potential for humor the story may have had. Only return the topic.
Review of Langdon's slapstick comedy with problematic plot element