Background: It is challenging to teach the complexity of the doctor-patient relationship through attitude, ethics, and communication (AETCOM) modules, particularly without being formally trained and especially to first-year medical students who do not interact directly with patients. The present study was undertaken to assess the effectiveness of trigger films (TFs) or short movie clips as a teaching-learning tool to train undergraduate medical students on various aspects of doctor-patient relationships. Methods: Two modules on various aspects of the doctor-patient relationship were developed using TFs and written case studies and implemented on Phase Ⅰ medical students. Quantitative and qualitative feedback were collected from learners. Perception, understanding, and knowledge were assessed using pre- and post-questionnaires. The results of the feedback and questionnaires collected after using TFs were compared with those collected after using written case studies. Results: There was a gain in knowledge and understanding after TF sessions, and TF sessions were rated much higher by the students than traditional methods. Most students found TFs to be an innovative and interesting tool. The satisfaction index calculated for TFs from the feedback of both students and teachers was above 96%. Conclusions: TFs engaged the students’ affective domain, promoted reflective attitudes, and linked their learning to experiences. It was reported not only to be interesting and engaging but also effective as a teaching tool.