The fourth instalment of the Doctor Who: Twelfth Doctor – Run Fast, Be Kind audio adventure is now available from Big Finish. This latest full-cast audio episode, titled Wings of Steel by Alfie Shaw, continues the journey of the Twelfth Doctor and his new companion Ash and finds the pair facing a ruthless fascist regime. This latest outing for Jon Culshaw’s Twelfth Doctor and Gwithian Evans’ Ash (new companion and travelling Bard) sees the TARDIS arrive at the world of Doorahla where the brutal fascist regime, the Ultima, is about to take total control. Joining Jon Culshaw and Gwithian Evans in Wings of Steel are Ellen O’Grady as Ulnar, Nigel Betts as Paxor, Nicholas Shaw as Mundar, and Holly-Marie Michael as 409. Doctor Who: The Twelfth Doctor Adventures – Wings of Steel is available now to purchasers of the Run Fast, Be Kind six-episode series bundle,which can be purchased from Big Finish for £43.99.