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Rebecca Hall

2 Sundance films explore a journalist's on-air suicide

When two movies are released at about the same time on the same subject, the topic is often something silly and big and spectacle-filled, like "Armageddon" and "Deep Impact" or "White House Down" and "Olympus Has Fallen."

But this year at the Sundance Film Festival, audiences found themselves with an unusual double feature. The Festival hosted the premieres of two films exploring the largely forgotten story of Christine Chubbuck, a 29-year-old on-air journalist in Sarasota, Florida who shot and killed herself during a live broadcast on July 15, 1974.

One, "Christine," is a fictionalized, narrative depiction of her life before...