KOZHIKODE: Well-known criminologist Dr James Wadakkancherry said Jolly Joseph, who killed six people in Koodathayi is a psychopath. The doctor concluded that she is at risk for homicidal mania, a mental illness. They will have no psychological difficulty in killing people. Usually a person would be guilty after committing a crime, but in her case that has not happened. That is why she had the mind to kill her husband, father and son. Dr James Wadakkancherry clarified this in an interview to Kerala Kaumudi.