Liverpool Sound and Vision Rating 7/10

Cast: Colin Baker, Lisa Greenwood, Nicola Sian, Tori Hart, Chris Overton, Brian Shelley, Glynn Sweet.

Every child feels the need to eventually pull away from their parent, to make their own mistakes, to discover the world by themselves and place their own very big personal stamp in the dust.

For Flip Jackson and The Doctor materialising in a unknown segment of space to do some routine maintenance work on the Tardis has its repercussions as Flip Jackson learns the hard way that sometimes you should not open the door to the creature at your door, no matter if they look benign and childlike, for the parent will certainly bear down upon you with big teeth.