Black Widow Killers are those who have exacted revenge on husbands, made profits from the murders, or committed cold-blooded killings for their own personal gain. For those who are interested in revenge and murder with an edge of femme fatale, welcome to "My Fearful B****." College crime enthusiasts Rebecca Teutsch and Maddy Bloom converse together through the 50 United States while discussing the most infamous female killers in each state, Black Widows.