Brendan nods, soberly. "It was very sudden. Chills, muscle aches - you know, like the flu."

"His fever was 39.5 Celsius - 103 Fahrenheit," Jackie remembers. "We made him stay in the bunk."

"How long were you sick, Brendan?" you ask.

"Until day 7?" He looks at Jackie. She nods. "But I am feeling fine now."

"What happened next?" you ask, as Jackie hustles you down into the racing yacht's cabin.