this video from that morning showing a distraught marlene led from her home by lead detectives linda burton and william blake, while investigators begin sweeping it for clues. they dust the garage for prints, confiscate the family cars. and bring the aisenbergs to the police station for questioning. >> they interviewed us separately, doing a polygraph for marlene and then one for me. >> did you have any concerns any objections to doing the polygraph test? >> no, we even at the time offered to give them blood and fingerprints. >> anything they needed. >> reporter: hours later, the couple says the police coached them in this televised plea. >> please bring our baby back to us. she needs her mother and her father. we all miss her and love her very much and we need her to come home to us please. >> it backfired. because the perception was that they were cold. >> marlene was seen by some as being a not authentic. unemotional uh, as you know, law enforcement seemed to focus in on that display. >> it took all the strength that i had to say what i said, and then the minute i was done i broke down i