‘When Seb returned, he found her tending the sick in the small huts on the outskirts of the village. She didn’t think she could catch it, you see, because she’d had all the preventative shots our modern world offers. But these people were dying of cholera, which neither Seb nor Megan knew. She should have burned all her clothes and washed thoroughly, but they didn’t know that. ‘At first Megan seemed fine. She was thirsty and lethargic, but she put that down to an exhausting day. By the following morning, she was vomiting and had severe cramping and diarrhoea. Seb aborted the mission immediately, of course. Megan was so weak she could barely talk, but she managed to summon enough strength to get them both back here. Seb rushed her to the hospital but by that point she was dangerous

