>> and each time he struck, rader said he was armed with what he called his hip kit. >> contained what? >> plastic bags, rope, tape, knife, gun, all those would be a kit where i could have them in the house and gather them up. >> tools that would come to define the work of btk. victims were often discovered bound with tape tied in unusual knots. >> you have to have the bonding which is control which is a big thing with me. my sexual fantasy is if i'm going to kill a victim or do something to a victim is have them bound and tied. now, similar along the line, in my dreams i could have what they call torture chambers and to relieve your sexual fantasies, you have to go to the kill. >> three months after the otero murders, in april of 1974, rader's next victim was kathy bright, a 21-year-old college student.