In the dying stages, Neil Brew and Rob Higgitt pressurised Brian Liebenberg into a mistake and combined to put Brew over in the corner for a clinching try.
Using a map of criminal activity produced by a CyberTracker, police arrested and convicted a gang of muggers that had been prowling a beach near Mr Liebenberg's home.
The Italian passed the ball out to Scotland's Simon Taylor, and timed his run to finish off the move from two metres out after receiving a pass from Brian Liebenberg.
To round off a miserable afternoon for the Paris side, in the closing minutes Liebenberg's pass was intercepted on the half-way line, and Brew and Higgitt ran to the tryline together to ensure the ball ended up touched down in the corner for a try.