Mysteries at the Museum - Season 9

20/20 continues to combine hard-hitting investigative reports, newsmaker interviews and compelling human interest and feature stories.

The American Gilded Age was a period of immense economic change, of huge fortunes made and lost, and the rise of disparity between old money and new.

Against this backdrop of change, the story begins in 1882 — introducing young Marian Brook, the orphaned daughter of a Union general, who moves into the New York City home of her thoroughly old money aunts Agnes van Rhijn and Ada Brook. Accompanied by Peggy Scott, an accomplished African-American woman, Marian inadvertently becomes enmeshed in a social war between one of her aunts, a scion of the old money set, and her stupendously rich neighbors, a ruthless railroad tycoon and his ambitious wife, George and Bertha Russell.

In this exciting new world that is on the brink of the modern age, will Marian follow the established rules of society, or forge her own path?

Star Trek: Starfleet Academy is set in the 32nd century, a time period in the far-future of the Star Trek franchise where Starfleet and the United Federation of Planets are recovering from a cataclysmic event, as depicted in Star Trek: Discovery. Indroduces viewers to a young group of cadets who come together to pursue a common dream of hope and optimism. Under the watchful and demanding eyes of their instructors, they discover what it takes to become Starfleet officers as they navigate blossoming friendships, explosive rivalries, first loves and a new enemy that threatens both the Academy and the Federation itself.

When a rising high school football player from South Central L.A. is recruited to play for Beverly Hills High, the wins, losses and struggles of two families from vastly different worlds — Compton and Beverly Hills — begin to collide. Inspired by the life of pro football player Spencer Paysinger.

An emotional thrill ride through the day-to-day chaos of the city's newest state-of-the-art trauma center and into the lives of the courageous doctors, nurses and staff who hold it all together. This is one of those days.