The unlawful killing of a reasonable creature in being within the Kings peace.
If an omission led to death, need to establish a duty to act (Pitwood/Stone and Dobbinson, etc)
Did D’s act cause death (are there any causation issues?)
MR of murder?
Express malice aforethought (intention to kill), or implied malice aforethought (intention to cause GBH - Vickers).
*Remember, indirect intention could apply: if death or serious injury was a virtually certain consequence of D’s actions, and D appreciated this, then the jury is entitled to find intention (Woolin).