>> it could have been richard gagnon.se results, he took a look at some of rick and bambi's belongings, including their shoes. >> yes, what did the lab analysis say about that? >> that it was big charlie's blood. >> the prosecutor did not buy rick's story about stepping in blood while looking for bambi's mothers carcass. the texas also found what they thought was blood on one of bambi's boots. >> you know have to people of interest, there's no telling what's going on. >> ten days after the murders, humphrey's asked both rick and bambi to take polygraph tests. both agreed, both show deception. >> rick gagnon show deception. >> police then sat both rick and bambi down in a separate booth, for another round of questioning. this time, the gloves were off. >> do you want to be charged with something? >> are you charging with anything? >> answer my question. >> i did not do anything. >> they hoped for a confession, or the very least, that she would give up rick. she did not do neither. >> you don't want to be charged. >> no. i'