We are delighted to announce the publication of the 50th volume in the Wellcome Witnesses to Contemporary Medicine series on the 21st anniversary of the first ever Witness Seminar. The new title, 'Monoclonal Antibodies to Migraine: Witnesses to Modern Biomedicine, an A–Z' contains highlights from previous volumes, and a foreword by the UK Government Chief Scientific Adviser, Sir Mark Walport. It is available to download, completely free of charge, here.