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Prosecutors still searching for answers in the murder of a popular young math teacher. CNN's Don Lemon has the latest.
CNN's Don Lemon shares new details from police about the death of a Massachusetts teacher.
Three teens in Duncan, Oklahoma, face charges in the death of an Australian college baseball player. The small town's chief of police tells CNN's Jake Tapper about the teens' prior records and other details from the crime.
Confessed killer John Martorano divulges details on the stand in the "Whitey" Bulger trial. CNN's Deb Feyerick reports.
Police say a drug cartel's debt collector told them he wanted to confess and clear his conscience.
CNN's Alina Machado reports on the ambush killing of a police officer in Kentucky and his chief's vow for revenge.
CNN's Atika Shubert reports on the brazen heist of thousands of dollars worth of jewelry from the Cannes Film Festival.
The FBI in New York has agreed to take a new look at a 2005 cruise ship death of a newlywed. CNN's Mary Snow reports. (Video)
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CNN's Brian Todd looks at the spectacular rise and fall of OJ Simpson: from stardom to armed robbery/kidnapping case.
RELATED STORY: Imprisoned O.J. Simpson testifies in bid for new trial
CNN's Chris Lawrence takes a look at how investigators are piecing together clues in the Boston Marathon bombings.
RELATED STORY: Healing in Boston as investigators seek 2 seen near bombing