Dermot O'Leary was quick to point out a Coronation Street blunder on Wednesday's This Morning as he gave his take on this week's soap spoilers. During the latest episode, Dermot, 50, and Holly Willoughby were joined by soap expert Sharon Marshall to discuss this week's telly.The presenters were shown a clip of Coronation Street killer Stephen Reid poisoning an oblivious Elaine Metcalfe as he spiked her tea with caffeine tablets.