He’s tempted to go right back to sleep once he’s reassured there’s no flood or fire or any need to jump into action, but obviously something’s bothering Rama. He doesn’t need a string to tell him that. He’s up and not covered and obviously agitated by something.

Crozier turns over and pushes the blankets aside, trying to look up at Rama, who’s sat himself up like he’s about to jump straight out of the bed and into the cold. He’s stiff, trying to breathe maybe to calm down an impending fit, and all the sleepiness falls away from Crozier in an instant. He sits up, quite obviously alarmed, and puts his hand into Ram’s shoulder.