Please Can anyone recommend a good source for me to buy/learn the routine called daves dotty dots. Thanks for all your help

Its in The Magic of Dave Campbell published by International Magic London

Thanks HAZ

I think you are right that rings a bell. I'm gonna pick it up this week. If you don't mind me asking, have you preformed this effect yourself and if so how what do you think? I personally think it's really good and it gets great reactions from the specs.