PENN & TELLER: FOOL US – Friday, August 4, 2017 at 9:00pm on CW50 – WILL PENN & TELLER BE FOLLED THIS WEEK? – Aspiring magicians are invited to perform their best trick to try and fool the world-famous team of Penn & Teller, who will get to see the trick only once and have to immediately try to work it out. Anyone who succeeds wins the right to perform with Penn & Teller in their celebrated show at the Rio Hotel & Casino in Las Vegas. The live studio audience and the TV audience watch along with Penn & Teller as they try to figure out the secrets. The magicians featured in the episode include Matt Johnson, Siegfried Tieber, Jason Fields and Jessica Jane. Alyson Hannigan (“How I Met Your Mother”) serves as host (#405). Original airdate 8/3/2017.