In New York, Denver, Paris and Berlin, four people have died separately in apparent accidents. Two women -- the widows of two of the dead -- find themselves under ruthless attack and are drawn together in fear, confusion and for mutual protection. But are they being targeted because one of them is the prosecution witness at a famous criminal trial? Or is there a connection to the mystery behind their husband\\\\\\\\\\\\\\\'s deaths? Meanwhile, Tanner Kingsley,