Madelyn Cline is taking a break from digging stuff up on to instead bury a secret in the upcoming thriller, — and ET can exclusively debut the trailer.Set in the '90s, the coming-of-age drama stars Cline (of the Netflix hit series and soon to be in ) and Sofia Hublitz () as unlikely friends whose carefree summer takes a dark turn when they find themselves at the center of a murder case. Will the secret bond them for life or tear them apart?«Working on is one of my best memories.