[Talisker]

Put two and two together. If he had something of value stored with something used to patch drywall, there is a good chance that he stored something of value inside of drywall, then patched it to look like normal. I would guess a whole bunch more silver plugs. It sounds like time to get a metal detector.

Well done, Sherlock!

[Talisker]

On second thought, after reading these comments, it’s probably an ozone plate. BUT - the other silver plugs could be in the ozonater. I still like your way of thinking - who knows what people will do?

I watch too many British mysteries.