Kunikida is being held for a murder that Rampo is certain he didn't commit. Meanwhile, Poe is determined to solve a murder mystery that has had the poilce stumped. Rampo has some thoughts on that situation, too.
The bright red envelope is the key.
.الظّرف الأحمر الفاتح هو المفتاح
Der Schlüssel liegt
im roten Umschlag.
La clave es el sobre rojo.
La clave es el sobre rojo.
La clé de l’énigme,
c’est cette enveloppe.
La busta rosso acceso è la chiave.
O envelope vermelho é a chave.
Ключ — это красный конверт.