Gwen thought for a moment. She wasn’t used to seeing Jack distraught. He was trying his best to hide it in that slightly cocky, slightly old-fashioned way of his, but she still felt her heart aching for him. Immortality had its price. ‘Maybe,’ she said carefully, ‘you just need a break.’

‘There aren’t any holidays in this job. You know that.’

‘Everyone needs some downtime.’

‘The Rift never takes a break. Right now it’s busier than ever. And, yes, we’ve got the Undertaker’s Gift to deal with on top of that – maybe. We can’t afford to stop. I can’t afford to stop.’

‘We managed without you for a while before.’

‘That was different. And there were more of you then.’ Jack turned and let his gaze rest on the back of Ianto’s head as he worked at his station. ‘I just can’t bear the thought of losing you. Either of you.’