To Dave, Alison and Jamie Trace,

for providing me with a Hub of my own in Plymouth

And dedicated to the memory of Craig Hinton

— best friend and best man

The sky was taking on the appearance of an old bruise as the sun slipped inevitably toward the Cardiff skyline. Yellows and purples were layered across it, each sliding into the other in a cascade of disturbed colour, like an Edvard Munch painting. Lights were beginning to come on across the city, in buildings and on streets, gradually replacing the actual city with a pointillist copy of itself.

The top of the tower block where Gwen stood was covered in weeds, moss and grass. The vegetation had drifted up, in seed or spore form, from the countryside beyond Cardiff’s suburbs. From where she stood, by the top of the stairway that led down towards street level and the rational world below, the far edge of the building was an impossibly straight cliff edge and the man standing there was poised on the edge of the void, coat eddying around him in the breeze like wings. Ready to fall or to fly.

‘Where can I get a coat like that?’ she asked.

‘You have to earn it,’ Captain Jack Harkness said without turning around. ‘It’s a badge of office. Like bowler hats in the Civil Service.’

‘They don’t still wear bowler hats in the Civil Service,’ she replied scornfully. ‘That went out back in the 1950s, along with tea trolleys and waistcoats. And I speak as someone who worked alongside loads of Civil Servants when I was in the police force.’ She caught herself. ‘I mean, when I was really in the police force, not just telling people that I’m in the police force to avoid having to tell them that I hunt down alien technology for a living.’