A colourful hair entrepreneur offers one Dragon a new look - and all of them a new investment opportunity. A cheesecake-maker has sweet dreams of a cash boost for his franchise model, but will his pitch be the stuff of nightmares? A husband-and-wife team hope their electrical invention will make sparks fly in the Den, as rival Dragons Deborah Meaden and Sara Davies line up to try it out. Presented by Evan Davis.