Prisoner's Conviction (Yandere Detective x Reader x Yandere Heirs)

(Y/n) woke in a room without her memory, knowing only what she was told by a redhead who was incredibly dedicated to her. She was told her family and friends abandoned her, she was left for dead, and that she was engaged to him. He gave her whatever she wanted, spoiling her with love and money, letting her do whatever made her happiest as long as he got to see her smile. But someone comes along claiming she was duped by him, told only what he wanted her to hear. Her life is flipped on its head, and still without her memories, she turns to the only people she can. Turns out, they were all playing the same game. Who'll be the first one to fess up to their crimes?

Please note: There will be other mentioned characters that are there for cameos, but it is not necessary to read Insatiable which comes before this. All the information/exposition you need will be in this story.