The secret files called the Zacharis Dossier may cause a war between the East and the West. In order to obtain a painting that is supposed to be the hiding spot for these files, Loid and Fiona enter an underground tennis tournament run by the owner of the painting, Campbell. If they win, the art piece they're after will be presented. Loid and Fiona enter as a married couple and play various skilled players including pro players!
I just told them we were 
having a tennis competition
أخبرتهما أنّنا سنقيم منافسة كرة مضرب
Dass ein Kollege aus der Psychiatrie
ein Tennisturnier veranstaltet.
Las engañé diciendo que un paciente
me había invitado a jugar un torneo.
Las engañé diciendo que un paciente
me había invitado a jugar un torneo.
Qu’un associé de l’hôpital
nous avait invités à une compétition.
Che sarei andato a giocare a tennis 
con alcuni importanti partner dell'ospedale.
Que era uma competição de tênis
Что один важный пациент больницы
решил провести теннисный турнир.