Thanks, But No Spanks
In The Mistress Always Spanks Twice
, a beautiful woman is found hanging in a park by leather cuffs while covered in caramel. Murder was never so sweet. The investigation leads Castle and Beckett into the dominatrix world where they meet people with names like Lady Irena and Mistress Sapphire. Castle says, "Whips, women and murder. Sounds like my lucky day."