One bitterly cold late-February day Donna Freitas picked up a pile of post at the front door of her basement flat and looked up to see her graduate studies professor — also a Catholic priest — standing outside, staring in through the window. Surprised to see him, but not for a second suspecting anything sinister, she invited the man, 30 years her senior, inside.

“It all happened so fast. He was there at the window, and then I opened the door, and then we were having tea in my kitchen,” she recalls. “Only after he left did I think, ‘How did he know where I lived?’ That was the first moment that gave me pause.”

A little over two years later, after he had stalked