Solve the Mystery

A dead man who was supposed to be cremated climbed out of the coffin and found that his body had undergone some strange changes. No matter his relatives or friends, he no longer recognized him... He lost everything but gained a special ability. He could see the life span of human beings and the truth at the murder scene. However, he found that he only had eighteen months to live, so he began to investigate the truth about his designed death, and at the same time, he was also looking for a solution to the secret that happened to him...