I would be remiss if I didn't offer condolences to the friends and family of Caroline John. I first saw her while being scared to death by Primords in the (awesome) "Inferno". I thought it was shortsighted of (the also awesome) Barry Letts to discard her for a less intelligent (and much more annoying) companion in Jo Grant. John was a better actress and Liz Shaw was a much more likeable companion (at least to me). That first season of the Pertwee era with Caroline John is one of my favorites.