A Death in Oslo

On May 31,1995, Jennifer Fairgate, a beautiful and elegant woman checked into the posh Plaza Hotel in Oslo, Norway. A few days later she was found dead in her room after having taken her own life. Only she wasn't Jennifer Fairgate and police (and a scrappy journalist) weren't so sure it was a suicide after all.

Sources:

S2E2 Unsolved Mysteries (Netflix Original Series)