Once again Tim Flagler at TightLineVideo creates the most well thought out, educational, and coherent instructional video available for a skill that every fly fisher should have in his or her quiver, tying the blood knot. Tying the blood knot is especially critical for those of us who tie our own tapered leaders, and even those who buy pre-tapered leaders will benefit from having this knot in their repertoire when tying on a new tippet. Although it is neither the simplest or quickest knot to tie, the blood knot stands out in its strength and slender profile, which makes it both forgiving in the cast, and reliable in the fight. Tight lines!