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. 
I don't believe you.
لا أصدّقك
Ich glaube dir kein Wort!
¡Yo no lo creo!
¡No me lo trago!
Je ne vous crois pas !
Io non ci credo!
Não acredito em você!
Я тебе не верю!