Harlan Coben, Chef Scarr Pimentel, Kate Gibson, Charlie Gibson, Niall Williams

"GMA" celebrates the 45th anniversary of "Nightline" with co-anchors Juju Chang and Byron Pitts; author Harlan Coben ("Nobody's Fool"); chef Scarr Pimentel (Scarr's Pizza) shares tips for making pizza at home; Kate Gibson and Charlie Gibson chat with author Niall Williams.