As the two tried to discuss Liz’s character, Tim chimed in to remind them not to give away anything major.
“Careful,” he said. “Too much!”
Liz had to revert to simply explain the general premise of the show, which sees stars Nicola Walker and Sanjeev Bhaskar as DCI Cassie Stuart and DI Sunny Khan trying to solve another cold case.
The presenters also tried to get some information out of the actress about a revival of Life on Mars but she refused to say anything.
MORE TO FOLLOW…
Sunday Brunch airs on Sundays at 9:30 on ITV. Unforgotten returns tomorrow night at 9pm on ITV.