Complex sentence: Her husband, Filippo Donati (Giovanni Nuvoletti), is the killer, and as he pauses to gloat over her body, an assailant hidden in the shadows stabs him repeatedly until he is dead.
Split into simpler sentences: Her husband, Filippo Donati (Giovanni Nuvoletti), is the killer. As he pauses to gloat over her body, an assailant hidden in the shadows stabs him repeatedly until he is dead.