William Hasley, Caitlyn Jenner’s Biographer, Dies Suddenly After Collapsing While Hiking at Runyon Canyon in Los Angeles Amid Mysterious Circumstances

Tdpelmedia | 10-06-2026 10:05am |

William Hasley, a biographer and close associate of Caitlyn Jenner, passed away on Saturday evening after collapsing during a hike at Runyon Canyon in Los Angeles. Emergency services were dispatched to the location, but despite attempts to revive him, the 78-year-old was declared dead shortly after being discovered. Authorities reported that Hasley was found off Nichols Canyon Road, and the circumstances surrounding his collapse remain unclear as investigations continue.

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