A question for QC.
If it had been initially proven that Sheila had committed suicide, would there have been any legal implications because she'd originally have been a beneficiary of her parent's Will ?Such as immediate or delayed access to what would have been her funds if the parents had died before her ?
Actually, this is a brilliant question you raise, but it requires us to go off on a tangent. Bear in mind I'm not a lawyer, never mind a probate lawyer, but I will give you my thoughts.
First, to answer you directly, I shouldn't have thought it would make any difference, as long as there is a clear and prompt coronial verdict that Sheila's death was not an unlawful killing and as long as that is not then overturned by a criminal investigation and verdict at trial.
The more interesting issue would be that of Sheila's sons, had either or both survived.
If Sheila's sons had survived, then it would be more complicated for Jeremy because Colin as the father would then come into it and Colin's lawyers would then need to to do things:
(i). read the wills and check to see if there was a survivorship clause - i.e. a clause that requires Sheila to survive for, say, 30 days before she can inherit. Such a clause was and is quite common in taxable estates such as this, for technical reasons we needn't discuss here;
(ii). consider the effect of the forfeiture rule and whether this could be waived in Sheila's case on the grounds of mental incapacity.
Both would be crucial points because the twins were not clearly dependents of their grandparents, so there is no clear right to an inheritance if there is a survivorship requirement, and also no clear basis to waive the forfeiture rule.
Assuming survivorship doesn't apply, then there is at least a half-decent argument for waiving the forfeiture rule on the basis of the mental incapacity of Sheila (and maybe also, at a stretch, you could argue the twins were dependents), so Jeremy would probably have been advised by his lawyers to reach a settlement with Colin, which may have taken the form of some sort of trust for the twins held in the joint names of Jeremy and Colin or just Colin.
Anyway, that's what I think.
Would the process of probate have taken longer than the usual 4 months ? How much more complicated could it have been ?
Taking all this into consideration I imagine it was far less complicated to go for a straight murder case.!?
( this is my mind working overtime )
No, I think the murder case complicated things greatly. Remember that there was already a coroner's verdict of suicide, so you had a contradictory situation and a lot of uncertainty.
Yet even in the more certain circumstances of everybody accepting Sheila has committed murder-suicide, probate overall would have taken a long time anyway, as it was a complex estate and it sounds like the relatives would then have taken steps to dispute the estate with Jeremy.