caballero, was tied to the sexual assault. based on the forensic evidence and witness interrogations, investigators believe that caballero planned the attack on an afternoon when denise was doing her laundry. when no one was around. he grabbed her and forced her into his apartment. and with isaac brown's help gagged and tied her up. he took her atm card and forced her to divulge her pin number. caballero then left to get some money and on the way back picked up robert messer. isaac brown stayed behind.