“The Parliament of Rats” by Daniel O’Mahony is the short story that really blows the rest of the Short Trips collection right out of the water.  It’s the only Fifth Doctor story in the collection and it’s clear that O’Mahony understands really how to deconstruct who this version of the Doctor actually is.  He is travelling with Nyssa post Time-Flight and the weight of the universe weighs quite heavily on him.  This is through a story that is metafictionally aware that it is a short story so leads to a particularly surreal adventure.  The characterization is wonderfully done, really making the Fifth Doctor feel like an old man who is slowly becoming tired with the universe as he faces an Eldritch horror.  It hits exactly the right boxes for me.  9/10.