Cardiac Mapping, 4th Edition, edited by MohammadShenasa, M.D., GerhardHindricks, M.D., Martin Borggrefe, M.D., Günter Breithardt, M.D., and Mark E.Josephson, M.D., Wiley‐Blackwell, Hoboken, NJ, USA, ISBN: 978‐0‐470‐67046‐0, 966 pages, 329.95 USD. Issue 5 (16th March 2015)