A young mother is dead and identical twin brothers are the suspects. Did studying TV crime shows help them come close to pulling off the perfect crime? Erin Moriarty reports.

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The McDonough family recounts their harrowing encounter with serial killer, Adam Leroy Lane. On July 29, 2007, Shea McDonough of Chelmsford, Mass., returned home and left the back door open for her brother, not knowing he was spending the night at a friend’s house. Hours later, her parents were startled by a sound coming from her room. When her father went to Shea's room to check on her, he saw a large masked man standing over her with a knife at her throat. This classic "48 Hours" episode last aired on 8/10/2013. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

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How police connected the murders of two young women to a man known as a zombie-fighting comic book hero. "48 Hours" correspondent Peter Van Sant reports.

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How a killer dressed like a clown murdered a mom and almost got away with it. Peter Van Sant reports.

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In 2009, millionaire Ben Novack was murdered in Rye Brook, NY. The son of parents who once owned the famed Miami hotspot, the Fontainebleau Hotel, and a business mogul in his own right, he was described by friends as a brat with a lot of enemies. Police suspected his wife Narcy, but did not have enough evidence to charge her. Then, they received a letter in Spanish, which stated that Narcy Novack and her brother Cristobal Veliz were responsible for the crime. “48 Hours" correspondent Troy Roberts reports. This classic "48 Hours" episode last aired on 12/6/2014. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

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Two teens killed on the same California beach six years apart. DNA on one of the victims leads to two suspects -- one of them worked for the police. Richard Schlesinger reports.

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"48 Hours" has covered the case of A-list fashion writer Christa Worthington, murdered on Cape Cod, since 2006. The man convicted of killing her continues to fight for his freedom. Susan Spencer reports.

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On Fourth of July weekend in 2005, police arrived at the Franklin, Tenn., apartment of Lesa Buchanan and were surprised by what they found: a cache of prescription drugs and sex toys. Lesa's boyfriend, Dr. Christ Koulis, told police they had spent most of the weekend in her bedroom having sex. Koulis, a plastic surgeon, had called 911 when she stopped breathing, and said he performed CPR, but that there was no pulse. At her apartment, detectives discovered used syringes with traces of oxycodone, a powerful narcotic available only from a prescribing physician. “48 Hours" correspondent Troy Roberts reports. This classic "48 Hours" episode last aired on 8/21/2010. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

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