Well, maybe for you they just happen! It's not an everyday occurrence for most people!

I've just gone to the library and there's a copy here. It's utterly lurid!

Oh, and I bet the inquiry is because Mrs Urquhart said she found out from an acquaintance who works at the Ministry. So I bet MLE or something were looking into Mr Urquhart for something, and maybe that's how they found out he was messing about.