Help I have an electrical question

Where to start is where the power comes into the house. There will be a couple very big circuit breakers right there in the basement. To test for wiring problems you open that circuit in the dark, with everything turned off in your house. If you see a spark then you have a problem. High bill is a good indicator of that as well.

Was the wiring cobbled together? I bought a farm where the wires to out buildings were laid underground in metal conduit. Rather than the usual way of all wires being run parallel, the two hot wires were wound around the ground before being put underground, probably re-used overhead wires as that's how they're run. Anyway, this generated an electromagnet, which cost money and generated stray voltage. Something like this might be your problem.

Well if all the power is shut off and the lights are still burning and you have a huge electrical bill, I'd say you got:

Fricking paranormal shit happening at your place.

You might want to call a realtor, the insurance agent and oh yeah, ghostbusters, a catholic priest, the dalai lama; perhaps even Guiness Book of World Records.

Sell the place or maybe torch it.

Or you could call a friend that has a basic understanding of perpetual motion, Hendershot generator and Telsa coils and shit like that.

Don't ever sleep in that house again!

Get out now!