Idaho v Lori Vallow Daybell: Day 21

An unannounced delivery of flowers at your front door is supposed to be a delightful surprise, but for Atlanta socialite Lita McClinton, it was anything but delightful. It was deadly. But who would use flower delivery as a ruse to shoot her to death – and why would it take an international manhunt and nearly two decades to bring the person responsible for her death to justice?

A Texas teenager vanished on Christmas Eve, and some video may show Camila Olmos right before she went missing. Authorities believe Olmos is in imminent danger. Anna Kepner's stepbrother says he doesn't remember anything, according to texts.

Ashlee Buzzard, who was arrested in connection with her daughter Melodee Buzzard's murder, pleads not guilty. Melodee's remains were found in Utah. John Paul Miller is indicted on cyberstalking charges leading up to Mica Miller's death.

Susan and Jeff Wright appeared to lead a happy life with their two young children in a suburb of Houston until Jeff’s body was discovered by police buried under a doghouse in their backyard. Susan would admit to the fatal stabbings, but was this a case of cold-blooded murder, or perhaps self-defense?

Part two of Vinnie Politan’s investigation into the murder of JonBenét Ramsey further examines videos and behaviors of Gary Oliva, a convicted pedophile who has confessed to accidentally killing JonBenét.