"Nightline's" Ashan Singh follows up with three Americans months after their trip to Finland's first-ever "Masterclass of Happiness," and reveal surprising revelations.

Adults from a wide range of backgrounds are increasingly turning to testosterone replacement therapy for medical treatment.

Actor Rohan Campbell talks his scary new film, "Silent Night, Deadly Night" and how holiday slasher films have become a movie watching tradition for some this festive season.

Morgan Geyser who took part in the 2014 “Slenderman Stabbing” case appears in court to face judge after escape that kicked off a 24-hour search.

Global celebrations for Jane Austen’s 250th birthday From parades to movies to tattoos, “Janeites” celebrated the lasting legacy of the original rom-com writer. December 24, 2025 ...

The creators of the beloved holiday tradition, The Elf on the Shelf, talk about the origin of the story and the latest developments in their business.

The reality star and her husband are defending themselves against multiple felony charges. They are accused of faking insurance claims to allegedly cover up significant debt.

The longtime friends sit down with George Stephanopoulos to discuss how their new film came about and working together.