michelle frascone was the lead detective. how do you explain that? >> terrifying.e had to look at. why do we have one that's able to communicate with us a few hours later, sitting in an interview room, and we have one that's going to autopsy? our first thing was to talk to the friend, who provided us quite a bit of information from that evening. at least a decent timeline. we did phone forensics immediately. >> what did that tell you what happened after midnight? >> we know from their phones that this was a planned event. they had discussed it. they took pictures. >> reporter: this is a photo of tara taken just moments after she took the drug, and that's what an actual lsd tab looks like. it was unclear to detectives whether those are two tabs or one tab that came apart. >> the reason they had selected the night of the 10th was because tara's parents were going to be gone in the morning for a sporting event for her sister, so this was going to give them time to recover. >> reporter: tara and her friend had planned it all out, even arranging to have another friend o