Love, and her husband. Its terrifying. You wonder what kind of story were you involved with . Jealousy, betrayal, revenge. Who had the motive to kill one person and one person only . There is no perfect murder. Im lester holt and this is date line. Heres andrea with the fire inside. Reporter its been said that everyone has three lives, one public, one private. And one secret. But in 2011 two new york area families had all three exposed when their lives collided in a lurid tale of sex and jealousy fire and murder. Its terrifying because then you think, well, hey. It could happen to me. It could happen to any one of us. Forever, those people forever their souls will be marred and torn by these events. Its hard to know exactly what happened that day at that door. Reporter that day was march 6th, 2011 a raw and rainy sunday in tea neck, new jersey. Henry rodson was the first to spot trouble. Reporter what was happening that night . I had a flat tire earlier in the day, and i had to come ba
Love, and her husband. Its terrifying. You wonder what kind of story were you involved with . Jealousy, betrayal, revenge. Who had the motive to kill one person and one person only . There is no perfect murder. Im lester holt and this is date line. Heres andrea with the fire inside. Reporter its been said that everyone has three lives, one public, one private. And one secret. But in 2011 two new york area families had all three exposed when their lives collided in a lurid tale of sex and jealousy fire and murder. Its terrifying because then you think, well, hey. It could happen to me. It could happen to any one of us. Forever, those people forever their souls will be marred and torn by these events. Its hard to know exactly what happened that day at that door. Reporter that day was march 6th, 2011 a raw and rainy sunday in tea neck, new jersey. Henry rodson was the first to spot trouble. Reporter what was happening that night . I had a flat tire earlier in the day, and i had to come ba
Police questioned everyone. The estranged wife, the new love, and her husband. Its terrifying. You wonder what kind of story were you involved with . Jealousy, betrayal, revenge. Who had the motive to kill one person and one person only . There is no perfect murder. This is dateline. Heres andrea with the fire inside. Reporter its been said that everyone has three lives, one public, one private. And one secret. But in 2011 two new york area families had all three exposed when their lives collided in a lurid tale of sex and jealousy fire and murder. Its terrifying because then you think, well, hey. It could happen to me. It could happen to any one of us. Forever, those people forever their souls will be marred and torn by these events. Its hard to know exactly what happened that day at that door. Reporter that day was march 6th, 2011 a raw and rainy sunday in tea neck, new jersey. Henry rodzen was the first to spot trouble. Reporter what was happening that night . I had a flat tire earl
casing for a .380 caliber handgun. an analysis of a comforter also found in that bedroom revealed something else. and the forensic scientist was able to determine that ethanol was on the comforter. reporter: that suggested an accelerant had been used to set rob s body on fire. for bergen county prosecutor john molinelli, that was a disturbing development. that s because this was now the arson homicide in bergen county in less than a year. are those other two murders the first thing that come to your mind when you see this crime scene? there was certainly a discussion and a deliberation on the topic, certainly within the first few weeks of the cantor murder. reporter: on the surface, there were haunting similarities. in april of 2010, 69-year-old dolores alliotts had been found stabbed to death in her burning home. she was a woman that was known to leave her house open. she did not lock her doors.
on the surface, there were haunting similarities. in april of 2010, 69-year-old dolores alliotts had been found stabbed to death in her burning home. she was a woman that was known to leave her house open. she did not lock her doors. it could have been a stranger from the street. reporter: a few months later, 74-year-old joan davis, a well known community activist seen here at a teaneck city council meeting was found strangled and stabbed to death in her burning home. we had always believed that the person who murdered joan davis was someone that she let into the house. reporter: and now, rob cantor had been found dead in his burning home also in teaneck. very early on we were looking at you know, could rob cantor s killer be the same killer in teaneck with ms. davis and in palisades park with ms. alliotts. reporter: the answer was unclear, at first. but detectives did have leads in the cantor case. a neighbor had reported seeing a