Whether an omission can support a manslaughter conviction when the defendant had only a moral, rather than legal, obligation to assist the deceased.
Holding
No. Criminal liability for an omission causing death requires breach of a legal duty imposed by law or contract, not merely a moral obligation to help.
Reasoning
The Court accepted the general principle that a person may commit manslaughter by failing to perform a duty when that failure directly and immediately causes death. But the duty must be a personal legal duty. Society may strongly condemn a bystander who fails to aid someone in peril, yet moral blame alone does not create a crime.
The authorities recognized criminal liability where a definite protective relationship or undertaking created a duty: for example, a husband's duty toward his wife, a parent's duty toward a child, a ship captain's duty toward a sailor, or a caretaker's voluntarily assumed charge of a helpless person. In each setting, the defendant's responsibility arose from law, contract, custody, or an undertaking that placed the dependent person in that defendant's care.