first Doctor Who series
... that the first episode of the first Doctor Who series had to be rerecorded because the TARDIS doors would not close?
... that the first episode of the <b id="mwCVU"><a href="./An_Unearthly_Child" id="mwCVY" rel="mw:WikiLink" title="An Unearthly Child">first <i id="mwCVc">Doctor Who</i> series</a></b> had to be rerecorded because the <a href="./TARDIS" id="mwCVg" rel="mw:WikiLink" title="TARDIS">TARDIS</a> doors would not close?