Treat Williams’ cause of death revealed as Vermont man is charged in fatal crash
killed Treat Williams in June was cited for “grossly negligent operation with death” Tuesday as the “Everwood” actor’s cause of death was revealed by Vermont police. Williams, 71, was driving a motorcycle on Vermont Route 30 in Dorset when Ryan Koss, 35, turned into his path, causing the actor to strike his SUV and be tossed off his bike, according to a police report. Koss was attempting to turn left into a parking lot in his 2008 Honda Element when he crossed directly in front of the Hollywood star driving a 1986 Honda VT700c motorcycle.“Williams was unable to avoid a collision and was thrown from his motorcycle,” Vermont State Police said in the report.