|Appearances||The Mistress Always Spanks Twice|
|Portrayed by||Dina Meyer|
Lady Irena is the owner of "Lady Irina's House" where the murder victim Jessica Margolis worked. Jessica's roommate Danielle tells Castle and Beckett that on the evening of Jessica's death, strangely, a wine glass with a red lipstick imprint on the table. Castle recognizes the color again immediately as the Lippenstiftton Lady Irina. When they ask Irina, she contends, however, waive their right to silence. In the end it turned out that she had been so uncooperative because, well, she's a lawyer and a dominatrix.