The crime committed by William Tanner may have multiple explanations. Even though, he has committed a terrible crime, a homicide, the crime can be justified from different ethical theoretic perspectives. In this regard, it is possible to view the crime committed by William Tanner from classical, positivist, structural and ethical perspectives. However, practically all ethical theories condemn crimes, especially such severe ones as homicides, but they can justify the crimes.
On analyzing the murder of Lois Murphy from the classical perspective, it is important to place emphasis on the fact that the crime was driven by objective factors. In this regard, it is necessary to take into consideration the fact that William lent money to Lois to buy drugs. However, Lois failed to return this money. Probably, William needed his money back to buy drugs for himself, which were important for him, if he was a drug addict. Therefore, he committed crime to obtain the money he needed badly at the moment.
From the positivist perspective, the crime was committed by William because of the justice concern. He just wanted to get what Lois owed him. Therefore, as Lois apparently refused to pay off the debt, he killed her and got his money back. However, he used excessive violence and cruelty.
In this regard, the structural perspective can explain the crime by complex social relations for the society fails to regulate the relationships between money lenders and money loaners. Lois and William belong to the risk group for they consumed drugs and involved in drug trade. Therefore, the crime is reasonable in this social group.
Finally, ethical perspective would condemn the crime because human life is the highest value and no individual has the right to take the life of another individual.