Can a doctor oversee the death of another person, even a rape-murder accused? It’s a question that hangs over a jail procedure that mandates presence of a medical officer for the scheduled hanging of four death-row convicts in the 2012 Delhi gang-rape case. The sessions court has issued death warrants, directing Tihar Jail to hang them at 6 am on March 20. The four convicts have just about exhausted all mandatory judicial remedies.