Last week, Procter & Gamble (PG 0.68%) jettisoned CEO Bob McDonald -- just as he seemed to be getting some traction in turning P&G around. But will the company's new chief executive officer fare any better?

Listen in as Fool contributor Rich Smith explains why former CEO Alan Lafley's triumphant return to P&G could be very good news indeed for the stock, but also warns of one huge risk factor to watch.