Though three of history's most formidable fighters – a Viking marauder, a ninja from old Japan, and a WWII aviator – are skilled at taking lives, they're just targets for their new adversary: the deadliest slayer of them all.
Following the death of his wife during a terrorist incident in London, a highly intelligent but reclusive CIA codebreaker decides to act independently because his superiors won't.
What will finally push her over the edge? An absolutely terrible day forces a dedicated single mom to the limit, leading to a surprising, desperate action.
