alive valentine's day morning, just as curtis said. >> they saw their mother alive that day. >> and that's -- that's the gist of their story. yes, i saw her alive that morning -- >> yes. >> -- dad took us to school. >> uh-huh. >> so there-- >> it was valentine's day. >> so therefore she couldn't have been dead upstairs and -- >> right. >> dire because they saw her alive. >> yes. >> reporter: the boys' sister lyndsay, had also told police two separate times her mom was alive that morning, had seen her off to school on valentine's day. >> she was standing in the front hall like marching us out the door like she always did. >> reporter: on the day of her father's arrest, lyndsay was away at college when she had an emotional talk with her brothers. >> talked to them on the phone the day he got arrested. and they passed the phone around and they were sobbing 'cause they were scared. hold on. hold on. and they asked me to come home, and that was the last thing i ever said to them, like ever talked to them. >> reporter: that's when another tragedy unfolded within the lovelace family. around the time of curtis'