We present the case of an 82-year-old Caucasian lady with a 16-day history of colicky lower abdominal pain and reduced appetite. When presenting to hospital she was haemodynamically stable with no fever. Examination revealed a soft but tender abdomen with normal bowel sounds. No masses or hernias were present. Per-rectal examination revealed an empty rectum. Investigations showed raised inflammatory markers, white cell count 11.9 and C reactive protein 24, in addition to which she had dilated loops of small and large bowel on the abdominal radiograph. The patient underwent an emergency laparotomy where a mass in the descending colon was found to be intussuscepting into the proximal sigmoid colon for which a Hartmanns procedure was performed. Histopathology confirmed a Dukes B T3 N0 Mx adenocarcinoma.