In November 2018, Florida native Carla Stefaniak decided to take a trip to Costa Rica to celebrate her 36th birthday. The majority of her trip would go as planned, and she would enjoy the tropical vacation spot for a little under a week. That is until November 27th, when her sister-in-law, who had taken the trip with her, had to return home as they had different airline tickets. While we can trace Carla's whereabouts to around 9 PM that evening, following this, none of her friends or family heard from her. The next day was not only her birthday but the day she was supposed to travel home. When she would remain silent all day and not depart from the plane she was supposed to board, her friends' and family's worries escalated. It is not for a couple of days that a grisly discovery was made, and while someone has been punished for what took place on the evening of November 27th, 2018, almost all of the evidence points to the fact that they did not work alone. 

Sources: https://docs.google.com/document/d/1_T8JPZ5qrDXjLtulkMK_HMnhyEQbg4pusleiXtO9MTk/edit?usp=sharing