joe morrissey was a respected scientist who loved his work. at's where he meto kay, who shared his passion and would eventually become h his second wife. then late one night joe, kay, andgh their young son were attacked insidewe their florida home. investigators did not know what to make of the strange circumstances surrounding this brutalsu crime or the stunning betrayal that followed. here's josh mankiewicz with "broken bonds." >> 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 ryloyalty, 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. >> christina yanos's mother was on the line. >> 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 killed him." >> he was joseph morrissey who had been ma