I finished reading this collection of the SF great's short stories a while back and I thought I'd give a rundown of the stories within.
Rescue Party: A survey ship from a multi-species federation is dispatched to our solar system after it's discovered that the Sun is about to go nova. Their mission is to explore as much of the third planet as they can and if possible, rescue as many humans as they're able.
This is a neat story because it's told from the perspective of alien explorers. They've never encountered humans before, so they naturally don't understand most of what they find as they explore the Earth. This leads to a tense moment where a group of them find themselves trapped on a subway car. They're rescued, but the whole expedition is forced to leave before the Earth is destroyed, so they assume that their mission is a failure. It isn't. They discover humanity's fate and it leads to an upbeat ending.
This is one of my favorite stories of the collection because of the alien perspective and the ending.
A Walk in the Dark: The back cover of the book describes this as an "old-fashioned ghost story set on an alien world", but I would describe it as boring. I love Arthur C. Clarke's stories, but this one was just not good. The plot is a simple one where the narrator is walking to a spaceport on the aforementioned alien world at night when his flashlight fails, forcing him to make the journey in pitch blackness. He becomes unnerved along the way because the darkness forces him to dwell on a stories he has heard about near encounters with something that may or may not exist on what is believed to be an uninhabited (prior to humans showing up, that is) planet.
I didn't like this one because there was no tension or anything. Maybe this would have been a chilling story back in 1950 when this short was originally published, but not today. The ending felt tacked on too. A Walk in the Dark is probably my least favorite.