It was not until the end of series five it was uncovered there are, or potentially were, four people working as ‘H’ and so far, only three have been caught – Dot Cottan, Gill Biggeloe, and Derek Hilton
Speaking to Express.co.uk and other press, without giving any spoilers about the new series, Jed Mecurio reflected on Dot Cotton’s signal.
He said: “I think what you get from the trailer is that this [H] is still a ghost haunting AC-12 but it haunts the characters in different ways.
“If you’re chasing something that is tormented you there are some people who are going to redouble their efforts and there are some who maybe want to drift away from that particular endeavour. Maybe it’s time to give up.”