No easy way to say this and I've being thinking of posting for a while. My FIL was convicted recently of looking at indecent pictures of children. We've had limited contact since (unsurprisingly).
MIL who is too nice still lives with him (we did offer she could live with us but she declined)
We now rarely see them and usually only MIL but I feel guilty - FIL probably had undiagnosed Aspergers, but I still can't forgive him for all the hassle he's caused ( meetings with social workers and police etc) and he seems to want to brush it under the carpet ...