Aaargh, prompts needed

I have signed up for the acd_holmesfest again, which has a closing date of the end of this month.

This is the point at which I warn any of my flist who are participating in this to look no further, although there will be nothing in this post to give anything away, I may use some suggestions (which of course may be totally unrecognisable) if anyone provides them.

I have the sub-plot; I have a couple of things that have been requested, that I will be happy to include.  But I have no main plot.  I need something suitable for a case.  I can't promise to use anything you may prompt, but if any of my flist feel so inclined - and I know some of you are really good at this - suggestions would be wonderful.

*Wanders off to eat the ears of a chocolate bunny I have been given.  And possibly pour some wine.*