Kidder's personal life was often tabloid fodder, never more so than in April 1996 when she went missing for four days.
She then appeared playing Siamese twins in Brian De Palma's cult thriller Sisters (1973); in the slasher film Black Christmas (1974); and the drama The Great Waldo Pepper (1975), opposite Robert Redford. Kidder made Lois so single-minded in her pursuit of a story that it made flawless sense she wouldn't notice the bespectacled Kryptonian at the next desk. As Syfy Wire's Courtney Enlow put it: "Her work was her passion, her work was her life, her work was her love truer than she could possibly find with Superman".
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As she was putting her carry-on luggage away, Obiama noticed the man head to the cockpit, where he spoke with the pilot. Both she and a flight attendant asked the man to get up, before Obioma chose to sit in 4J instead of 4K.
When she was found, she was wearing clothes she got from a transient, seemed to have cut her own hair to alter her appearance and carried 40 cents, a Glendale police spokesman said at the time. "And of course she remains the best Lois Lane in the magical "Superman" & "Superman II".
Kidder is synonymous with her iconic role as reporter Lois Lane opposite Christopher Reeve as Superman. "She was going to be an actress, and she wanted to be a star". Her career, however, slowed in the 1980s and included a variety of television movies, including a performance of Pygmalion with Peter O'Toole on Showtime in 1983. She had banked a 10-year body of work in TV and movies by the time "Superman" arrived.
Despite her very public battle with mental illness, Kidder continued appearing in both movies and on television, often with a wry nod to her boisterous, outgoing personality.
"If I were a cancer patient", she said in 2008, "I would today be considered cured".