Fantasy drama Merlin returns to BBC One for a fourth series next month. CultBox recently took a trip down to the set in Cardiff and chatted to a number of the cast, including Katie McGrath, who plays Morgana.

> Order the Series 4 Volume 1 DVD on Amazon.

Watch Katie’s reaction to Colin Morgan’s new waxwork figure…

Watch Katie discuss being starstruck at Comic-Con 2011…

Watch Katie reveal the TV shows that she’d most like to appear on in a guest role…

Watch Katie ponder which actors she’d like to guest star in Merlin in the future…

In our previous exclusive clips, Katie recaps where we left Morgana in Series 3 then introduces the new series and discusses playing the ‘new Morgana’.