Cops say Angela Lara -- Saeed's girlfriend and mother of his child -- waited in the car while Saeed robbed the Fields' residence and ultimately killed Martha Fields after his identity was revealed.
Cops say Martha Fields opened her door to find two deliverymen with packages.
Police say Kevin Cypher tied Martha Fields to her refrigerator after she told him she was a diabetic and needed access to insulin.
Martha and her son, Jay, in happier times.
Martha's husband, Jim, and her son, Jay, still struggle with hearing the news of Martha's murder.
The broadcast segment of Marwan Saeed coincides with the three-year anniversary of her brutal killing.
Martha Fields had retired from teaching and was living in a gated community in Fulshear, Texas.
Cops say it's still unclear how Marwan Saeed and his accomplices breached security at the gated community where Martha Fields and her husband resided.
Cops say Martha dragged herself to the phone to call 911 once Saeed and his accomplice fled the house. She died just a few days later.
Cops say Martha Fields, a retired school teacher, was brutally stabbed to death by Marwan Saeed on Dec. 11, 2007.
Police say Kevin Cypher walked them through a blow-by-blow re-enactment of the botched robbery at the Fields' residence in Fulshear, Texas.
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