TRANSFORMATION by ROBERT BARR

Two brothers who own a successful clock/watch shop in Paris are surprised when a disreputable looking man enters the shop- and they both believe has has come to case the shop before robbing it. They contact the police, and the police question the man, but come up with nothing. Things turn bad for the brothers soon after.

We promised two Robert Bar stories and here they are:

https://www.podchaser.com/podcasts/1001-classic-short-stories-tal-46960/episodes/an-alpine-divorce-and-the-rigo-82867169