This is a very funny and clever little piece of work, concerning Edward (married accountant) who is having a secret affair with Binny (mother and divorcee). Binny holds a dinner party for Edward, his friends Simpson and wife Muriel, who is reckoned to be broadminded enough not to mind that Edward is a supposedly respectable married man. Muriel does turn out to be sympathetic, but then Binny's drunken friend Alma turns up and throws up all over the floor. Shortly afterwards a criminal gang being chased by the police break in and take everyone hostage.
The phrase "Injury time" derives from Binny's extended metaphor of a football game being just like life - they have so little time in which to accomplish their goals. Binny's goal is to get Edward to leave his wife for her, but she is sometimes disgusted with both herself and Edward at the clichéd behaviour they each seem forced to employ.
The writing is brilliantly sharp and witty and I kept thinking what a marvellous film this would make. This is one of those books that makes you laugh out loud - a brilliant exposé of the manners and mores of the middle classes in extremis.