Roleplay - a comedy, paperback/alan ayckbourn

Justin and Julie-Ann, hopelessly mismatched in love, are about to introduce their respective parents to each other over dinner - Justins upper-crust alcoholic mother from Surrey and Julie-Anns bigoted Yorkshire father and prim mother.

Into this doomed scenario drops, literally, via the balcony upstairs and the river, Paige Petite, a former lap-dancer with suicidal tendencies and her thick, gun-toting minder who is employed by her violent boyfriend.