At night, a robber made his way to an elderly woman. But where did the intruder get the key that police say he used to open the door? And why did the thief need an old antediluvian camera? Yes, there are plenty of mysteries for Michel and his faithful friends. And soon another one is added to them: an ancient gold coin is found in the garden of an old woman...

The thirty-fifth story in the series “The Adventures of Michel Teret.” In this series, only seven stories in the cycle have been selectively published.