Savages by Rosalyn Wraight

Yes, the crew is back again—this time plus one. Maggie and Susan give hosting a try with a camping trip out in the middle of the boonies. Add a game of Capture the Flag, paintball guns, and an eerie voice begging for help, and you are safe to assume that the weekend will not bring out the best in them. Maybe our hostesses had something else in mind. (Character Driven, First-Person)