Doctor Who: Peter Capaldi's first episode thrilling, says Mark Gatiss

Mark Gatiss has promised an "exciting" and "disturbing" debut for Peter Capaldi on Doctor Who.

Speaking to Digital Spy at the London Lesbian & Gay Switchboard 40th Anniversary Gala last night, Gatiss spoke about writing for Doctor Who series eight.

"Peter has a very different energy to Matt Smith and to David Tennant," he said. "He's older which changes everything - it's amazing what a change does!

"Matt was sublime and I was very sorry to see him go, but it's also great to have a change - as it has always been with the Doctor."

Gatiss added that Capaldi's new Doctor brings with him "a whole new set of rules".

"The Doctor's always the Doctor - but you can have a lot of fun playing with people's expectations," he continued. "Everyone knows how the previous Doctor would react in any given situation - and now you just don't know!"

Steven Moffat has written Capaldi's first full Doctor Who episode, which Gatiss described as "thrilling".

The sci-fi drama will return to BBC One later in 2014, with Sherlock's Steve Thompson also among the confirmed writers for the latest run.

Source: Digital Spy