What makes a man evil?

Born with it? Learned? 

Or, has he been cast his lot as a reminder to those who might stray… ”This is what power and obsession can become if unchecked.” 

Maggie somehow saw past it...or was blind to it.

Her maker might say, "Maggie McCabe knew full well and used his evil for a greater good, to protect an unborn child." 

But Joseph Cassidy’s evil slipped through the cracks of time, unfulfilled. And now seeps into the life of the woman it was used to guard.

What makes a man evil...