Carol Gershon died last year, leaving Michael Gershon in the apartment they had shared in Walnut Creek, Calif.

Carol Gershon's relationship to Michael Gershon was not clear last night.

But in May, Michael Gershon joined the Bach Dancing and Dynamite Society, a nonprofit producer of musical performances more than an hour's drive away in Half Moon Bay, a foggy, misty beach town south of San Francisco.

Then, on Sunday, Gershon was over Kaua'i, riding in a Hughes 500 tour helicopter with three other passengers when the helicopter started spinning out of control and crashed in Ha'ena on the island's North Shore.

Gershon, 60, died in the wreckage.

The 30-year-old pilot, Donald Torres of Hanapepe, was treated and released from Wilcox Memorial Hospital on Sunday night.

Another passenger, 60-year-old Dania Hansen of Los Altos, Calif. — near Stanford University along the San Francisco Peninsula — was taken to Wilcox in critical condition.

Hansen underwent surgery yesterday and was upgraded to serious condition.

Douglas Barton, 60, and his wife, Judy, 51, also survived the crash and were taken from Wilcox on Sunday night to The Queen's Medical Center in critical condition.

They were about halfway through a two-week trip to Hawai'i from their home in Newport, N.H., said Douglas Barton's sister, Debbie Dufresne.

Dufresne told the Eagle Times of Claremont, N.H., that she had spoken with her brother on the telephone.

"He was a little groggy," Dufresne said. "They're going to put a pin in his hip."

Barton told his sister that doctors planned to do further tests on his wife, but she said he did not provide details of her injuries.

Reach Dan Nakaso at dnakaso@honoluluadvertiser.com and Robbie Dingeman at rdingeman@honoluluadvertiser.com.