Su Tang and her husband run an art gallery together and seem to have a perfect, loving marriage that everyone is envious of. But what if one day you discovered that the person sleeping next to you is a terrifying serial murderer? What would you do? One step forward is destruction, and one step backwards is sweetness. There is only a thin line between the man you love and the terrifying killer. Su Tang, can you tell the face of love? (Source: Yue365.com) Adapted from the novel "Xi Xiu Wei Tang" (细嗅薇糖) by iQIYI.