In commercial fiction, if you wish to use an omniscient point of view, you must first create an authorial voice that belongs to the omniscient narrator, not to any (or all) of the characters. From this base, you can dip into people’s thoughts at will, but for this to work, you must develop a deft control of point-of-view shifts. If you simply jump from head to head as the mood strikes you, the voice becomes a fractured mess.
