evidence, police showed the family everything on september 11th, 2011, the day they arrested giselle esteban. esteban spending time at michelle's school to figure out the nursing student's schedule, grabbing a lab coat and stealing a key card. >> the amount of premeditation and conscious thinking behind her murder was really shocking. >> reporter: also for the first time footage from esteban's interrogati interrogation. >> you don't like here? >> yeah, that's evident, that's very clear. >> how would you classify your dislike for her? >> how -- what do you mean? i just dislike her. i don't -- >> i mean do you hate her, do you want to see something bad happen to her? >> no, i just want her to stay away from my child. >> we caught her in a few more lies. >> reporter: investigator ritchie called her cooperative but annoyed. >> it's always with missing persons you're never doing enough. >> reporter: police worked with michelle's family as they worked tirelessly to find her. >> it was more like say the family putting it out there, getting it on to social media and it became a national story. >> re

for the first time on "dateline," gisele esteban answered questions from investigators about that killing, and now le's family is speaking out about the gripping evidence revealed in the case. our stephanie trang has that story. >> you really just want to go into the screen and grab her and protect her. >> reporter: the final moments of michelle le's life captured on camera. >> the last minutes of her life, it's really hard to see. >> reporter: through skype michelle's cousin says it was just as hard to see the rest of the evidence. here police show the family everything the day they arrested esteban. esteban spending time at her school in oakland to figure out the nursing student's schedule, grabbing a lab coat and even stealing a key card. >> the amount of premeditation and conscious thinking behind her murder was really shocking. >> reporter: also for the first time, we saw footage from esteban's interrogation. >> you don't like her? >> yeah. that's evident. that's very clear. >> how would you classify your dislike for her? >> how -- what do you mean? i just dislike her. >> i mean, do