This farce concerns the phantom thief Arsène Lupin's advance notice declaring that he shall steal the Penultimate Night and its safe from the mansion of one Phileas Fogg. A certain detective is among those gathered together to try and stop Lupin...
I can see why Lupin is so 
interested in this now.
توصّلتُ لسبب اهتمام لوبين بالألماسة الآن
Ich verstehe jetzt, warum Lupin
so daran interessiert ist.
Je comprends pourquoi Lupin
convoite ces objets.
Ho capito perfettamente perché Lupin lo voglia.
Posso ver agora por que Lupin
está tão interessado nisso!
Теперь ясно,
зачем бриллиант понадобился Люпену!