The Fearmonger ( audio story ) It was the first audio story featuring Sylvester McCoy as the Seventh Doctor and Sophie Aldred as Ace . It was also the first time the two actors had been back together playing these parts since 1993 ' s " Dimensions in Time " . Written by Jonathan Blum , this story continues Ace ' s continuity developed in other mediums such as her surname where here , like in the Virgin New Adventures novel " Set Piece " , it is stated to be McShane . Publisher ' s summary . One would - be assassin is in a mental ward . Another ' s on the run . Their intended victim is stirring up the mobs . Terrorists are planning a strike of their own . A talk - radio host is loving every minute of it . A Whitehall insider whispers about a mysterious UN operative , with a hidden agenda . Everyone ' s got someone they want to be afraid of . It ' ll only take a little push for the situation to erupt — and something is doing the pushing . But you can trust the Doctor to put things right . Can ' t you ? Plot . Stephen Keyser and Walter Jacobs attempt and fail to kill Sherilyn Harper , the head of the right - wing New Brittania political party ; Keyser encounters something strange as he attempts to flee the scene . Days later , the Seventh Doctor and Ace already on the scene , investigating the situation , which has taken a turn for the weird . In so doing , the Doctor uses — abuses , really — the radio show of Mick Thompson , a talk show host and humourist . He ’ s trying to flush a monster into view , but Thompson is having none of it . Ace , meanwhile , is working with an old friend from Perivale , Paul Tanner , who is something of a hacker . He ’ s happy to see her , as she ’ s been missing for fifteen years , but not so thrilled at what he ’ s dragging her into . With Paul ’ s help , Ace locates Walter , and through him , Keyser , who is now hospitalised . She and the Doctor attempt to enlist them to stop the monster , which they call the Fearmonger . It ’ s incorporeal , and parasitic , and it feeds on fear and related emotions ; and it lives inside Harper . Walter , in fact , can hear it in the tones of Harper ’ s voice . However , his fear is too powerful , and is even directed toward the Doctor , about whom he has been warned ; and Keyser is completely broken . Meanwhile , Harper has also been warned about the Doctor , via her PR consultant , Roderick Allingham . He is a former Ministry employee , and is familiar with the Doctor ’ s file , including his time with UNIT . He lays plans to bring the Doctor in , suspecting him of terrorist ties . Walter attempts again to kill Harper , this time with a bomb at a rally , but the Doctor and Ace intervene . They are forced to flee to avoid arrest , and return to Paul ’ s apartment , only to hear a broadcast message from Karadjic , the leader of a terrorist group called the United Front , announcing strikes against New Brittania . They discuss the Fearmonger , which is the real enemy here ; and the Doctor builds a force field generator that can contain and destroy the monster without harming the host . They go to New Brittania headquarters to confront Harper , but are intercepted by Allingham , and allowed to escape . Back at Paul ’ s apartment , they discover the disembodied Fearmonger waiting for them ; the Doctor tries to reason with it , but fails , and is forced to ground it out with a metal frying pan , temporarily delaying it . Using Walter , the Doctor arranges a meeting with the United Front , and attends with Ace ; but Karadjic proves to be under the influence of the Fearmonger , and shoots Ace in the shoulder . The Doctor persuades Karadjic to let them go , and gets Ace to a hospital . While there , he is confronted by the Fearmonger again , but it cannot harm him ; his one fear — for Ace ’ s safety — has already happened . Three weeks pass while Ace recovers , with the Doctor trying — mostly unsuccessfully — to slow down the United Front . At last he gets an opportunity to confront Harper again , during a live broadcast of Thompson ’ s show ; but it does not go as planned , and Ace and Walter are revealed to be at the hospital . Worse , Ace hears something terrible : She hears the Fearmonger in the Doctor ’ s voice . The monster has jumped hosts . A mob is on its way to the hospital for Walter , and he and Ace are forced to flee . They meet up with the Doctor and Thompson as the mob turns to a riot ; the Doctor prods Thompson to attempt to take some control of the situation . Meanwhile , it ’ s revealed that Allingham himself has ties to the United Front , though he has been using the situation in New Brittania ’ s favour . He arrives onscene as Thompson interviews Karadjic , not realising that they are broadcasting live ; and the entire house of cards tumbles down around Allingham . However , he has the decency to make it clear that Harper was unaware of the deal with the United Front . Karadjic and Allingham are arrested , and Walter is taken in for psychiatric treatment . However , the Fearmonger is still at large . Ace sends Paul to obtain the bomb left behind by Walter , and places it near the range of the force field generator built by the Doctor . She then traps the Doctor in the field , and threatens to detonate the bomb if it doesn ’ t leave him , even though it would kill her as well . Slowly and gently , the Doctor persuades her to listen to his words , not his voice ; and he makes her understand that the Fearmonger is not in him , nor in Harper , but in her — just as it was in Walter . This is why they are the ones who heard the voice — it was the Fearmonger working from inside , not outside . She turns the forcefield on herself , and the creature is destroyed .