Transmigrating Into a Book Without an Omniscient Viewpoint Is a Little Scary

The modern-day actress Ye Zhen inexplicably transmigrates into the novel adaptation she is starring in. Oddly enough, she doesn't become Ye Lan, the heroine of the book. Instead, she becomes an insignificant nobody who happens to share her name. Just as Ye Zhen is utterly baffled, one mystery after another comes her way. What lingering obsession does the Ye Zhen in the book have...?