This book is the definitive work for trout fishermen who tie flies, a step-by-step reference for tying nearly 500 patterns than will take trout everywhere, in all conditions. Tying instructions for the most useful or most used pattern in each style are presented in step-by-step colour photographs and detailed captions and are followed by the pattern's most useful variations. The patterns are divided into two main groups: searching flies, for those times when trout are feeding non-selectively, and imitative flies, for when trout are taking a specific food form and nothing else.