Doug, heavily intoxicated, shot and killed Tom after Tom came to his apartment due to Doug's previous behavior that hurt his girlfriend's leg. The case involves issues of intent, deliberation, premeditation, malice, and intoxication. Applying relevant laws, it can be concluded that Doug violated different laws and murdered Tom with first-degree murder, making him guilty of the crime. He can be charged with first-degree murder and potentially face a death penalty or life imprisonment.