HOLLY Willoughby was giddy with excitement today over finally finding out who Line of Duty's mystery villain 'H' is. Fuelling speculation that the culprit will be revealed on Sunday, her co-host Phillip Schofield teased a "very exciting guest" on Monday's show. "The country is gripped by LOD," said Phillip. "We have - and all I'm allowed to say is - on Monday's show a very exciting guest pertaining to that show." Holly laughed: "I'm glad you're saying this not me, because I definitely would have messed it up." Phillip replied: "I am treading the line of what we were allowed to say this morning. "Treading the line of duty...", joked Holly. "It's so exciting.
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