Introduction: The delayed presentation of Rectal Injuries / perforations following a blunt trauma to the abdomen adds significantly to the morbidity, mortality and increased hospital stay and pain to the patient. Case Report: A 42 yr old male patient has been admitted in the emergency department with history of blunt abdominal trauma after getting struck between the steering wheel and the drivers seat for a long time in a RTA. His vitals were normal. He was discharged home after the CT scan (both plain and contrast) showed no organ injury as reported by the radiologist. Later after 12 hrs he was readmitted in the emergency with severe abdominal pain and guarding. X- ray erect abdomen showed air under diaphragm and it was later diagnosed as rectal perforation in CT and also taken to OT for surgical repair. Conclusion: Rectal injury or perforation following a blunt abdominal trauma is such a trivial thing in the beginning to find even on CT scans. It takes time to evolve into fully blown acute abdomen with peritonitis. So there is a need for re-evaluation in all patients of blunt abdominal trauma who appears to be normal on investigations out of proportion to the injury that they sustained.