As the site of a former military base, there have always been rumors that East Township High School was the site of experiments with space and time. For years, students have whispered in the hallways of a doorway created within the school, one that can access multiple timelines and realities, a place known as the Down World. As the new kid in school and still reeling from the unexplained death of her brother Robbie, Marina O'Connell is only interested in one thing: leaving the past behind. But a chance encounter with handsome Brady Picelli changes everything. He will lead Marina to a startling discovery. The Down World is real and the past, present, and future are falling out of balance. Brady is determined to help Marina discover what really happened to her brother. However, what is taken from one world, must be repaid by another. And Marina is about to discover that even a realm of infinite possibilities has rules that must be obeyed.

In the sequel to Down World, Marina is lured back through the doors by a mysterious man. “Time after time I come back to this cold brick door. Sealed, as it has been for over a year now, as I know it must remain forever. I don’t know why I keep doing this to myself. I know I can never open the door to Yesterday again. I can never have Kieren back. Never talk to Brady about the things we saw under the lake all those months ago. And never tell my brother Robbie how my heart broke every day that he was trapped in the abyss lurking behind those immovable bricks. Maybe I come to this room the way some people visit gravestones. The three doors are all I have left of my loved ones now. The rough, hard rectangles and their merciless mortar, staring back at me. Yesterday. Today. Tomorrow. And me in the waiting room. To open any of these doors is to open a pathway to death. I know this. And yet, they call to me.” Eighteen months have passed since Marina O’Connell first discovered the doors, and her life changed forever. She’s a senior now. And she’s living in a plane of reality with her stepmom and her dad, while Robbie and her mom are in Oregon. She and her best friend Christy are making plans for college. They’re crushing on Mr. Martel, the new history teacher. He’s young enough to inspire them to take the subject seriously, but there’s more to him than good looks. He isn’t who he seems, and when he confronts Marina with the secret they both share, she realizes that she can’t, or won’t, turn away from the doors that have been calling out to her for months.

The final installment of the Down World series sees Marina face old demons while also jumping into the future to a world that was changed by her very hand. For fans of Netflix’s Dark and the Dark Stars series by Danielle Rollins. After a very complicated senior year, Marina O’connell has relocated to Boston where she is attending her dream university. She has moved in with her brother Robbie and his fiancé Piper and is trying to get over the heartbreak Adam caused, leaving her without a trace. While Marina tries to put herself out there and meet new people, she still cannot help the pull of the events that happened last year and the doors she left behind at East Township High. But the night before Robbie’s wedding, Marina finds Adam sitting on her aunt’s front porch. He claims he’s been away teaching and apologizes for disappearing. Marina, still in love with him, takes him back. But as the two continue where they left off, no one but Marina seems to trust Adam. Then one night, another door to the Down World is found and Marina is once again sucked into the chaos of the portals. This time, she finds herself in the future, in the year 2063, and is astonished to find what her actions have caused in this utopian plane. While the future seems bright, dark secrets slowly begin to surface and people lost to time begin to appear. Marina will have to decide what she is willing to sacrifice in order to get her life back.