from Sherlock Holmes Esq to Dr J Watson:
Watson,
How are you fixed to venture from the Capital for a few days? – I have had a request from a young lady in need of assistance – she resides with her stepfather in the wilds of Surrey  and needs our help regarding concerns over  the death of her twin sister two years previously.

I am aware that your time is not your own these days –  I realise that you are otherwise  detained, being in the throes of physical indulgences with Mrs W – I realise that your weaker nature will, naturally, be diverted by the base urges which you lesser individuals are prone to – if you are able, at all, to give our cases a modicum of attention, I would be cheered and gratified.

Your colleague and friend, Sherlock Holmes.