EXCLUSIVE: Fox today closed a mid-six-figure deal for an untitled spec script that will mark the directing debut of Melissa Stack, who wrote the Cameron Diaz-Leslie Mann comedy The Other Woman.

Karen Rosenfelt is producing the new comedy, which Stack wrote based loosely on her own experience. It’s an R-rated comedy in which an older woman goes on vacation with her much-younger boyfriend’s family. Daria Cercek is the executive at Fox. Stack got a lot of notice around town a few years ago for her script I Want to _____ Your Sister, which Paramount bought, and she is currently rewriting Who Invited Her for Universal. Stack is repped by Kaplan/Perrone, Paradigm, and Hansen, Jacobson.