Have everyone sit in a circle around or near the campfire. It is important that each player be able to see all the other players clearly. If the fire is very big, you may need to circle up near it rather than around it. If it is smaller, you will probably be able to see the players on the opposite side of the fire.
Shuffle a deck of cards and hand one card to each player, making sure that the ace of spades is among the cards handed out. The player holding this card is the "murderer." The murderer must begin killing off other players around the campfire by winking at them. If a player sees someone winking at her, she must scream dramatically and collapse. The goal of the game is to figure out who the murderer is without getting killed. If a player thinks he knows who the murderer is, he can have everyone around the circle close their eyes and hold out their cards upside down. The guesser touches the hand of the person they suspect is the murderer and that player reveals her card. If she is the murderer, the guesser wins. If not, the guesser is out of the game, and play continues until either someone guesses correctly or the murderer wins by killing everyone.
Finish the Story
Campfire stories are a traditional activity for individuals gathered around a crackling fire enjoying s'mores. To make the story more interesting, turn it into a game where no one person gets to tell the story. One player begins the story with just a sentence or two. He then stops abruptly, mid-sentence, and passes the story on to the next person. Each player must pick up the story where the previous person left off and add a sentence or two, moving the action along. Continue the story until it comes to its own dramatic, or hilarious, conclusion.
High school kids may not be eager to sing traditional children's songs around the campfire, but you may be able to get them singing nonetheless. Have anyone who plays the guitar bring their instrument along. With a little encouragement, you can soon have the whole group singing along with acoustic versions of the most popular songs on the radio. Groups can even rap or sing a cappella. Stay away from songs learned in elementary school and let the music go with the current tastes and trends.