The fatal heroin overdose of a Google executive and the young woman charged with killing him is a story that exposes the collision of two lives - Forrest Hayes, a hugely successful technology genius playing outside of his marriage, and Alix Tichelman, a troubled, tattooed model from a wealthy family dating online. One is dead, the other charged with giving him a lethal dose of heroin. 48 HOURS takes viewers for the first time ever to the crime scene aboard the yacht "Escape," where Hayes died, recorded by the Google exec's own high-tech cameras.

Did a millionaire really want his model wife dead so badly that he was willing to hire a hit man to kill her? And if he did, was $80,000 enough to get the job done? Troy Roberts and 48 HOURS investigate the twisted relationship between millionaire health supplement distributor and a wannabe rock 'n' roller, Dino Guglielmelli, his model wife, Monica Olsen, and the presumed hit man who came into the picture, Richard Fuhrmann.

A report about the investigation into the 2012 death of Weight Watchers executive Danielle Thomas, and the murder case against her boyfriend, Wall Street attorney Jason Bohn, who claimed being neglected by his mother as a child should keep him from spending his life in jail. Thomas was found dead in the bathtub of the Astoria, Queens apartment she shared with Jason Bohn.

While under cover, Gregorio joins a social club for military wives after one of the members is contacted by an ex-boyfriend who is on the FBI's most wanted list.

NCIS investigates the disappearance of a Navy entomologist after a deadly shooting at a research lab; the team finds that a rare and deadly virus was stolen.

When Chance's old C.O. from the Rangers is implicated in a daring weapons theft, Chance comes to defend him and get the guns back.

Chance becomes the target of a hit man, but the killer reveals his code of ethics only allows him to kill bad guys.

Chance's efforts to infiltrate a drug operation are hampered by a dirty cop who is forcing a juvenile dealer to work undercover for him on the same case.

Chance helps a woman find her father, a man of ill health bent on enjoying life and fulfilling his dreams.