This farce concerns the culprit in Lady Godard's murder. A certain detective makes it clear that Lady Godard was murdered by a member of her own family, despite their protests. Regrettably, the services of the detective's bodyguard are required. 
between 12:30 AM—when their 
meal ended—and 1:00 AM.
بين الثانية عشرة والنصف، عند انتهاء
وجبة العشاء، والساعة الواحدة
entre las 0:30,
al acabar la velada, y la 1:00.
entre las 0:30,
al acabar la velada, y la 1:00.
après le souper,
entre minuit et demi et 1 h.
após a refeição, entre 00:30h até 01:00h.