The iPhone video showed an uncomfortable arm’s-length close-up of a plus-sized couple with their faces smooshed together as they filmed themselves. Their cheeks were flushed from champagne. He could see up their noses and spot salad between their teeth. In the background, a DJ played a Blake Shelton bro-country stomper. Frost heard the clatter of crystal and silverware and the burble of other guests talking and laughing. He’d watched the video so many times that he’d been able to piece together most of the conversations.

As if someone in the room might have said something to explain what was about to happen.

He knew the names of the couple with the camera, because he’d interviewed them. They were Jeff and Sandy Barclay. Jeff was the groom’s cousin. Neither of them knew the guest named Monica Farr. She wasn’t connected to the happy couple at all; she was the last-minute date of one of the groomsmen. They’d met at a dry cleaner two weeks before the wedding, when Monica was dropping off and he was picking up. The groomsman had broken up with his long-time girlfriend the previous day. It was pure chance that he asked Monica out. That was the only reason that Monica Farr attended the wedding and reception of Michael Sloan and Evelyn Archer-Sloan. She didn’t know anyone there.

“Great party, guys!” Jeff Barclay shouted into the camera.

“Love the quinoa salad!” his wife, Sandy, called.

Frost chuckled to himself. What San Francisco event would be complete without quinoa? And organic kale, of course.

“Next stop, honeymoon!” Jeff bellowed. “Aruba, mama! Sex on the beach, am I right?”

“Jeff, shhh!” his wife hissed.

“Hey, come on, it’s their honeymoon. Remember ours? I didn’t think that bed in Paris was going to hold up!”

“Shhh!” Sandy said again, but she turned and kissed her husband on the lips, and the camera bounced, losing them from the frame. When they appeared again, both of them were rumpled and smiling. Frost could hear the music changing behind them. Blake was done. The DJ went to a mellow ’70s pop song. People shouted for Mike and Evelyn to take the floor, and a cheer went up from the guests as they did.

“Love you guys!” Jeff said.

“Hey, they’re dancing! Quick, quick, turn the camera around.”