That sounds good. Well, I'd assume that there is some rich person who got robbed, who is also one of Jamie's clients. We can say that the thief didn't actually have time to get the _____ out of the house, but he hid it really well, and he poses as one of Jamie's hires to get back into the house and get it. But the FBI eventually figure out that the thief didn't have time to get the.... jewels? out, and that the party is the perfect cover to go get it. But when they find him he draws a gun and takes Jamie hostage....

How's that sound?