A genuinely brilliant, dark, dense, literate and creepy 1880s story from the final year of the show's original run.
It is beautifully written by Marc Platt and this scene in particular is a gem, which is why it is included here in Great Moments;
Ace: Don't you have things you hate?
The Doctor: I can't stand burnt toast. I loathe bus stations - terrible places, full of lost luggage and lost souls. And then there's unrequited love, and tyranny, and cruelty.
Ace: Too right
The Doctor: We all have a world of our own terrors to face
Ace: I face mine on my own terms!
It also takes a standard Victorian music hall song and turns it into something genuinely chilling as the seemingly human residents of a grand house (in actual fact galactic recorders of life in the Universe) turn their guests into 'animal' exhibits to catalogue them.
If you like Who, even New Who, watch this one. It's a rich and heady brew.
Oh and both Sophie Aldred and Katherine Schlesinger look rather nice in gents evening wear of white tie and tuxes