*I shouldn't be here.* Historian Mara Ellis arrives at Blackwood House, a decaying Victorian mansion perched on a windswept cliff, to complete a groundbreaking manuscript on the 17th-century Blackwood Witch Trials. Hired by the enigmatic Dr. Nathaniel Reeves-a stroke survivor obsessed with his family's dark legacy-Mara soon discovers the house holds more than academic secrets. A mysterious brass key hidden in her room unlocks a cabinet of journals left by predecessors who vanished under chilling circumstances. As eerie phenomena escalate-tapping at windows, whispers in the fog, and a spectral light descending into the sea-Mara uncovers a generations-old covenant tied to the equinox. The Reeves family's history intertwines with Sarah Blackwood, an accused witch who communed with entities from the deep, and a seven-year cycle that demands a human vessel. Caught between Dr. Reeves's cryptic warnings, his daughter Caroline's chilling pragmatism, and visions of a shadowy figure named Sophia, Mara must confront a truth that blurs the line between delusion and reality. Is Blackwood House a gateway to ancient forces, or a labyrinth of psychological manipulation? As the equinox looms, Mara's choices will determine whether she becomes a bridge between worlds-or the next victim of a legacy written in silence.