The day arrives for Mo to return William, but she isn't prepared to let him go. Arthur is admitted with a toy soldier stuck in his arm. Sacha applies for the role of consultant, but his assessor intervenes with his treatment options.
Zosia is determined to impress Jac, but her confidence is thrown into doubt when she sees a question mark next to her name in Jac's office. Dom becomes increasingly obsessed in his patient, and struggles to focus on another patient of his.
Hanssen is left with a difficult decision as Guy promises to regain control of the hospital. Jac is pitted against Guy in a fight for funding. Sacha tries to protect Essie, but things don't go to plan.