Suspect your nan or grandad has had a stroke? Act F.A.S.T.
F. Fuck it, go through the motions, they are going to die of something.
A. Ask if they have made a will out and where is it.
S. Stay until they die. Then you can ransack the house for valuables.
T. Talk to them, try and find out any shit on your mum and dad you can blackmail them with in the future.