Wow! This story was different to many others in that you aren't really focusing exclusively on the tickling any more, but have centred on the plot of the story and personally I'm much more interested in that! You've really caught me up in this now, especially with this third part. Really supreb writing (and I loved your extended take on Dumbledore, brought him back to life nicely). I will wait for part four with impatience!
P.S. am writing back to you now 🙂