Deception

 was the thirty-fifth episode of Series 25 and the 766th episode of Casualty overall.

Plot
The team grieve for Polly but put on a collective brave face, as the medical drama continues. Miriam tries to encourage them to talk to her about it but it's too early; everyone just carries on.

Later, Jordan finds eight-year-old Sam hiding in the Clinical Decision Unit. Sam admits that he is there to see Miriam who is flabbergasted to learn that he is her step-grandson and that he damaged his hand on purpose so he could come to see her. His dad – her stepson – has Parkinson's disease. Faced with the possibility of a family reconciliation, Miriam knows she must choose between her family and her job.

Meanwhile, a near-death experience makes teenage hustler Liz realise how much having a friend means and Flavio faces up to the consequences of giving his unknowing wife an abortion pill.