Ok, that article has my imagination running overtime, lol. Could portray PS as a capable and virile male prepared to go to great lengths for his paramour, not the vulnerable elderly man as the prosecution going after Jubelin would have us believe? Deceitfulness and secretiveness? Did he have it delivered by post?

Unfortunately, when a crime has been committed, these things always come to light if you're on the witness list and close or live close to the victim, best to confess it and they'll move on, imo.
Other thoughts -
If HS was running late for bingo that morning, could PS have backed the car out onto the street to save valuable minutes?
Did PS see William in the front yard and didn't admit it for fear of the cops questioning him further which inevitably ended up happening anyway?
The Postie due to visit FGM 2 days (? ) after William went missing, was this for an expected parcel delivery for FGM or to discuss a private matter?