joe morrissey was a respected scientist who loved his work. that's where he met kay, who shared his passion and would eventually become his second 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." [music playing] josh mankiewicz: what would you do for your family? would you lie? would you walk through fire? could you ever accuse them of something terrible to save yourself? this is a 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 pick up the phone. josh mankiewicz: christina llanos says mother was on the line. christina lannos: you could just hear the sirens and she just kept saying you have to come here, they broke into the house and he's dead, they kille