Prostate cancer usually causes no symptoms. It is often noticed during a digital rectal examination, or transrectal ultrasound, or when an elevated PSA level is detected. The spread of prostate cancer can be detected by the presence of prostate cancer cells in areas surrounding the prostate, such as the seminal vesicles, lymph nodes in the groin area, the rectum, and pubic bones. Advanced prostate cancer may cause additional symptoms. The most common symptom is bone pain, often in the vertebrae, pelvis, or ribs, from cancer which has spread to these bones. We report an unusual case of metastatic prostate cancer which was found incidentally during repair of an inguinal hernia and highlight the possibility of direct invasion of the peritoneal cavity by prostate cancer cells.