Unthinkable is the fifteenth episode of The Sulez Dynasty Season 2 and the 28th episode overall.
1ST HOUR: MEREDITH GOES ROGUE- As Henrietta's infection worsens, Meredith goes to Aurora for help, as Katherine, Sage, Lucien, Marie Ayer, and Mary Louise scramble to discern her endgame. When Aurora and Tristan make a drastic list of demands, Meredith finds herself alone and forced to tap into her inner darkness in order to save the woman she loves. Meanwhile, Olivia ascends the ranks of Osvajac and Siobhan Abrams cuts a deal with Rachel. Finally, Siobhan kidnaps Ariane for her employer.
2ND HOUR: MEREDITH ON THE WARPATH- In the aftermath of her spiral, Meredith takes the fight directly to Tristan for the first time. Katherine and Lucien take Aurora hostage to draw Ariane away from the impending bloodbath, while Olivia approaches Sage with an offer. Siobhan Abrams and the rest of Olivia's order launch an offensive against The Organization; Joanna, Nora and Mary Louise are left to defend the place alone. As Meredith fully embraces her dark heritage, Katherine and Freya lead the charge to stop her from starting a war. Tristan is recalled to Virginia by an old benefactor. Marie Ayer meets with an old friend.
- Shelley Hennig as Meredith Sulez
- Oliver Ackland as Tristan de Martel
- Amanda Schull as Henrietta Feyers
- Michelle Ryan as Katherine Pierce
- Scarlett Byrne as Nora Fairchild
- Teressa Liane as Mary Louise Fairchild
- Cassidy Freeman as Sage Meddenhall
- Rebecca Breeds as Aurora de Martel
- Riley Voelkel as Freya Mikaelson
- Andrew Lees as Lucien Castle
- Crystal Reed as Joanna
- Tracy Cole as Sofya
- and Sophia Bush as Olivia Archer
- Amy Acker as Marie Ayer
- Jaimie Alexander as Siobhan Abrams
- Eion Bailey as The Man
- Isabel Lucas as The Woman
- Chloe Bennett as Gemma Chalise
- Hilarie Burton as Rachel Davies
- Haley Ramm as Ariane
- Tracy Ifeachor as Aya Al-Rashid
- Jessica Harmon as Barachiel
- Leslie-Anne Huff as Rayna Cruz
- Tess Atkins as Simone Collins
- Samantha Isler as Kennedy Walsh
- with Katee Sackhoff as Alyona Reznika
- and Seth Gilliam as Rojas
- Antagonists: Aurora de Martel, Tristan de Martel, Olivia Archer, Sofya, Rojas, Siobhan Abrams, Rachel Davies
- This episode takes place in April 2013.
- Final episode of the series to take place in 2013.