The two men were having dinner at a high-end restaurant when they met two women, according to the Los Angeles Police Department.
Eventually the two men and their new female acquaintances left the restaurant and ended up at the home of one of the men.
At the home, the women mixed drinks, which the men drank.
At one point, one of the women went outside with one of the men, while the other two stayed inside.
After some time, the woman outside went back into the home to use the restroom.
When she didn't come back out again, the man went to look for her.
He found his friend lying unconscious inside a bedroom and the two women gone.
Also gone from the home were two very expensive wrist watches.
He called paramedics, who brought his friend to a local hospital, where he was described in serious but stable condition.
Police did not specify whether the man was knocked out by something in the drinks or some other cause.
The incident happened Oct. 28, 2019 but police released surveillance video of the two women on Friday and asked the public for help finding them.
One woman was described as 20 to 30 years old with blond hair, standing about 5 feet 3 inches to 5 feet 5 inches tall and weighing 140-150 pounds.
The blonde was the woman who stayed inside the home, police said.
The second suspect, who was outside the home during part of the incident, was wearing a red wig. She stands about 5 feet 3 inches to 5 feet 5 inches and weighs 140-150 pounds. She has tattoos of hearts and butterflies on her stomach, police say.
Anyone with information is asked to call Det. Manny Pedroza at (213) 486-6940. Anonymous tips can be provided to Crime Stoppers at (800)222-TIPS.