It’s May 2018, and Robert Hunter Biden is trawling through his favorite Los Angeles escort sites. He orders “Yanna,” a 24-year-old Russian native from Emerald Fantasy Girls. “Russian, Green Eyes, Thin Brunette, an elite courtesan,” is Yanna’s pitch, along with a menu of sex acts. “Hi, My name is Rob. I’m staying at Chateau Marmont. Are you available now?”