with relation to the last murder, amber costello. there was also a physical description that matched the defendant. and that as well as the phone usage, which linked heuermann to his house in massapequa as well as his business in mid town manhattan. that really was the start of our interest. dana: the truck had been there before, right? the witnesses had indicated that this person that they described as a very large individual was with amber costello shortly before she disappeared and he was driving this avalanche vehicle. it wasn t until march 14th of 2022 we were able to link an avalanche vehicle to rex heuermann who matched the description. bill: the woman who gave you the information was the victim. it was witnesses who saw the truck.