joe morrissey was a respected scientist who loved his work. where he met kay, who shared his passion, and would eventually become his second ■ç wife. then late one night, joe, kay, and their young son were attacked inside their florida home. investigators did not know what to make of the strange circumstances surrounding this brutal crime, or the stunning betrayal that followed. here's josh mankiewicz with broken bonds. >> what would you do for your family? would you like? would you walk through fire? could you ever accuse them of something terrible to save yourself? this is the story about two very different families. it's about loyalty, terror, deception, and love. and for one of the families, it begins with a late-night phone call. >> i was about to not answer it, and something told me to rc pick up the phone. >> christina's mother was on the line. >> you can hear the sirens, and she kept saying, you have to come here. they broke into the house and he is dead. they killed him. >> he was joseph morrissey, who had been married to christina's