. >> both barbara walsh and renee powell were single, lived alone and worked in the health care field. >> both apartments were on the first floor. there was evidence that both women had been doing their laundry at the time their attacker entered their apartment. both women had been bound using undergarments, their own undergarments. the bindings also included electrical cords that had been cut off from lamps around the apartment. >> the killer was organized and crimes well planned. >> in both units he took down the smoke detecter before setting the fire. and even took down the doorbell ringers. he went out of his way to make sure that the fire wouldn't be discovered prematurely. >> both victims had been stabbed, strangled and burglarized. both were doing laundry in the basement before they were attacked. >> we theorized that she had left the sliding glass door unlocked when she went down to the laundry room to start a load of laundry. and when she returned, the suspect had been in the apartment. >> the similarities were too blatant to be ignored. and the conclusion too horrific to avo