During the next seven years there were ten more Aldwych farces; Travers wrote eight of them: "Rookery Nook" (1926), "Thark" (1927), "Plunder" (1928), "A Cup of Kindness" (1929), "A Night Like This" (1930), "Turkey Time" (1931), "Dirty Work" (1932), and "A Bit of a Test" (1933). It took Travers some time to establish a satisfactory working relationship with Walls, whom he found difficult as a manager and distressingly unprepared as an actor. In the early days he also had reservations about the other star of the company, Ralph Lynn, who initially ad-libbed too much for the author's taste. Travers noted that the ad-libbing diminished as he came to anticipate and include in his scripts "the sort of thing Ralph himself would have said in the circumstances". Though the main parts in the Aldwych plays were written to fit the members of the regular company, Travers varied their roles to avoid monotony. He also varied the themes of his plots. "Thark" was a spoof of haunted house melodramas; "Plunder" featured burglary and violent death (in a way that pre-echoed Joe Orton), "A Cup of Kindness" was what he called "a Romeo and Juliet story of the suburbs"; and "A Bit of a Test" had a cricketing theme at the time of the controversial "Bodyline" series.