[Even for those of us who are all booked up on this and were convinced years ago he was framed, this is still an excellent article - very well organized and presented, with even-more-damning new evidence]
http://www.lrb.co.uk/v31/n18/peir01_.html
24 September 2009 [Cover date] London Review of Books
The Framing of al-Megrahi Gareth Peirce