“You haven’t seen the torture yet, now you will,” the leading lady of ‘Mrs Serial Killer’ Jacqueline Fernandez snarls at her victim with a sharp knife in her hand. Fernandez’s menacing words should ideally be applied to the thriller. Director Shirish Kunder’s psychological thriller — an absurd tale of a glamorous wife who sets out to prove her husband’s serial killer charges — is torturous and painful to endure.