archie mcfarland had been targeted and executed. and whoever killed him had escaped without leaving behind a murder weapon or fingerprints or a hair from what must have been a violent struggle. anyway, this was pre-dna. they just didn t have any physical piece of anything left on the driveway. that was the big focus. reporter: but there was a clue. oh, yes. and it was, frankly, very, very strange. one of the stab wounds was in the groin area. reporter: what did that tell you? it s personal. reporter: kind of like somebody sending a message? yes. reporter: maybe a sexual message? yes. reporter: about that on that crisp december morning as gary and his mother stood shivering and sobbing, the realization hit. i turned around and looked at my mom. i go, you know who did this. i just i immediately knew. i just it was like, there s no doubt in my mind what happened. coming up, there was someone else who also seemed to know who the killer was. e killer was he s bee
reporter: about that on that crisp december morning as gary and his mother stood shivering and sobbing, the realization hit. i turned around and looked at my mom. i go, you know who did this. i just i immediately knew. i just it was like, there s no doubt in my mind what happened. coming up, there was someone else who also seemed to know who the killer was. how could you do this? do you know what you ve done? you ve destroyed me. when deadly triangle continues. so i can take on my day. activia. now in probiotic dailies. with three extrairst absorb channels.r they stay up to three times drier so babies can sleep soundly all night pampers -ahh. -the new guy. -whoa, he looks -he looks exactly like me. -no. -separated at birth much? we should switch name tags, and no one would know who was who. jamie, you seriously think you look like him? uh, i m pretty good with comparisons. like how progressive helps people save money by comparing rates, even if we re not the lowest. eve
strange. one of the stab wounds was in the groin area. reporter: what did that tell you? it s personal. reporter: kind of like somebody sending a message? yes. reporter: maybe a sexual message? yes. reporter: about that on that crisp december morning as gary and his mother stood shifvering and sobbing, the realization hit. i turned around and looked at my mom. i go, you know who did this. i just i immediately knew. i just it was like, there s no doubt in my mind what happened. coming up, there was someone else who also seemed to know who the killer was. how could you do this? do you know what you ve done? you ve destroyed me. when deadly triangle continues.