Written by Tim Tackett, who is one of the luminaries of JKD in the USA.  Tackett teaches so many of the skills and the inner workings of JKD, old school in this book - it is amazing to say the least.  Tackett is highly skilled and extremely knowledgeable about JKD.  In these 126 full color pages he teaches the skills that are rare and original to Bruce's Lee's Jun Fan Kung Fu.