After meeting Beverly again, you have to sneak into a celebrity's house in order to videotape her doing the nasty. Sneak past the maids (jump into the pool along the way for one of the mission bonuses) and get into position and tape her until the two of them spot you. Run to Beverly's car and she will chase after you, but keep the camera pointed on her while she's driving. Eventually, you'll lose her and then the mission will end soon.