I know who they are and they know I know .
so do the police....
This is a good prerequisite to get your money back!
If the thief already has transfered the coins to an exchange your chance of getting evidence is pretty good i would say.
Knowing the thief in 'real life' is always advantageous in those kind of thefts.
In most countries the value (you should get back) is calculated in FIAT-value at the time of the theft.
This probably won't get you your whole BTC back, but at the majority.
Make sure to provide your law enforcement agency all required information.
And please keep us informed on what happens next. This might be useful for a ton of people here.
You are not the first, and will not be the last one being 'physically' robbed.