Harrison, Marissa A.: - Dr. Marissa A. Harrison is a research psychologist, author, and associate professor at Penn State Harrisburg. Her studies on serial murder and human sexuality have been covered in popular media such as The Washington Post, The New Yorker, and Time.

Harrison, Marissa A.: - Dr. Marissa A. Harrison is a research psychologist, author, and associate professor at Penn State Harrisburg. Her studies on serial murder and human sexuality have been covered in popular media such as The Washington Post, The New Yorker, and Time.