However, there are two terribly open questions in the Williams case that cannot have an innocent explanation. One, aside from the business of the holdall itself, is the placing of it in a bath. That, it seems to me is entirely with a view to avoiding detection. A move to insure no fluids seep through the floor boards or anything like that, or attract flies, bluebottles etc.
The other one is the failure of a MI6 employee to return from leave apparently not raising so much as an eyebrow among his superiors. An analyst with exposure and access to highly classified data goes missing and not even the smallest alarm bell rings?? Extraordinary.
Personally, I'm seeing here a sex game that has perhaps gone too far, but not necessarily with malicious intent, and there has been a panic to cover up any tracks. His partner, accomplice or faux tormentor also being in the Service and with experience of covert work, or 'dark arts' as the family have asserted.