This one doesn't offer much in the way of surprises. It's a pretty straight forward story with a lot of info dumps along the way. The ending is far from surprising. I think you might try a slightly different approach. Start this with her walking out for her trip, and since Jack is not a dull boy, make her business trips a regular thing. After all, he's boffing hookers, so he has to have some free time. And why dress Neve as a prostitute? She's not there for sex. She wants to blackmail him, so make it businesslike. And then, there's the ending. You might find a way of turning things around. When the wife shows up, Neve and jack kill her. Then, Neve kills Jack? Twist this so we're surprised. Reversals are fun.