The McCann's can't wait for their trip to Portugal. They are bringing their 3 young children and going with a group of family friends. The days are idyllic- laying out by the pool while the kids play, playing tennis, and after the kids go to bed hanging out at the nearby tapas restaurant. But when the McCann's go to check on their children, one of them is missing. Where is Madeline? And why do we still not have an answer 18 years later? 

Resources:

https://www.ebsco.com/research-starters/social-sciences-and-humanities/disappearance-madeleine-mccann