What's Hidden In My Husband's Car

On our fifth wedding anniversary, my husband, Ethan, began picking me up from get off work every single day. In the underground parking garage, a luxury car would suddenly start shaking violently; inside, I’d find telltale lipstick marks and a pair of stockings—while from the trunk, a strange, unsettling sound would emerge. With my husband going to great lengths to stop me from looking, what dark, hidden secret could possibly be stashed away inside that car?