Secret codes are used by the cast of Broadchurch to protect the show's new scripts.
David Tennant is to reprise his role as Detective Inspector Hardy in the second series of the ITV drama, and admits security is so tight on the follow-up that he has to type in a special password whenever he opens emails regarding the show.
Broadchurch series 2 cast / Credit: ITVFailing to share any details about his role in the new series, he did joke about the lengthy efforts bosses go to, to ensure top secret details are kept between cast and crew.
Speaking to The Sun he said: "I'm in it - I think that's essentially all I can say."
He then joked: "We're all tagged and it sets off electric shocks if we say anything we shouldn't."
Fans are however to expect a "pretty gruesome" show, with David dropping hints about the plot whilst discussing this summer's filming.
The actor is also starring in US remake Gracepoint, premiering last week.
Portraying Emmett Carver in that show alongside Anna Gunn as Ellie Miller, he said it was "odd" to remake the same show with a different cast in a new setting, but it added to the appeal.
"It's such an odd thing to be asked to do. To kind of reshoot something that was in many ways the same, but not really. I don't even know how to relay it. I'm not aware if this has ever been done before -- therefore, I think it would have been churlish to say no to doing it, don't you think?'"
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