Episode 10.14
Apparently mortally wounded in the penultimate episode of the final season, Alan attempts to smuggle himself across cross the border into what is only ever spoken of darkly in Starfleet rumour as the ‘Night Garden’. Just perhaps, there he can achieve some sort of dream-like afterlife.
His blood runs cold as he hears what may be the last words of his mortal life, threateningly intoned as the train starts up: ‘Iggle piggle iggle onk, we’re going to catch the Ninky Nonk’.