Fortunately, North won't be driven to breaking in, because it only takes til the third knock for Simon to reach the door, tugging it open and looking out warily. He wasn't expecting any company today, especially with the way the wind's been howling around the corners of the house, the snow piling up on every windowsill, and his nerves are already tightly strung. But all traces of suspicion disappear upon seeing the state the man on his doorstep's in, and instead concern and smooth competence kick in as he reaches out to offer an arm to help him inside.

"Come on. I'll get some blankets and tea. Nobody should be out in this without the proper gear. Are you experiencing any dizziness or having any trouble breathing?"

Because on a day like this, hypothermia is a real concern, and whoever this is, Simon's not going to leave him out there to die. He might be stuck on this backwater hole of a planet, but he's still a doctor. He took an oath to save lives, wherever he could.