Canadian law recognizes that within the spectrum of murder, there are different degrees of culpability. Thus, the broad category of murder has been divided into three subcategories: first-degree murder, second-degree murder, and manslaughter. Each subcategory reflects the level of responsibility of the alleged offender in the death. These offences can result in lengthly jail sentences including the potential of life in prison.
The best way to approach the situation, understand your rights and formulate a winning defence is to speak to a lawyer who has knowledge and experience in the areas that most affect you.